Split (3)

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Not supported with pagination yet	Which tense does the sentence use? Reba chops onions for the tomato sauce.	[ "future tense", "past tense", "present tense" ]	2		closed choice	grade4	language science	verbs	Verb tense	Is the sentence in the past, present, or future tense?	Present tense verbs tell you about something that is happening now. Most present-tense verbs are regular. They have no ending, or they end in -s or -es. Two verbs are irregular in the present tense, to be and to have. You must remember their forms. Past tense verbs tell you about something that has already happened. Mo...	The sentence is in present tense. You can tell because it uses a present-tense verb, chops. The verb ends in -s and tells you about something that is true or happening now.
Not supported with pagination yet	What do these two changes have in common? a slice of banana turning brown grilling a hamburger	[ "Both are chemical changes.", "Both are caused by heating.", "Both are caused by cooling.", "Both are only physical changes." ]	0		closed choice	grade8	natural science	chemistry	Chemical reactions	Compare physical and chemical changes	Matter is made of very small particles called atoms. Atoms can be linked together by chemical bonds. When two or more atoms link together, they form a molecule. In a chemical change, the chemical bonds in the molecules break. The atoms then link together to form different molecules. The types of molecules in matter bef...	Step 1: Think about each change. A slice of banana turning brown is a chemical change. The part of the banana in contact with the air reacts with oxygen and turns into a different type of matter. Grilling a hamburger is a chemical change. Heat from the grill causes the matter in the meat to change. Cooked meat and raw ...
	Select the organism in the same genus as the crystal jellyfish.	[ "Goura victoria", "Larus occidentalis", "Aequorea victoria" ]	2	This organism is a crystal jellyfish. Its scientific name is Aequorea victoria.	closed choice	grade7	natural science	biology	Classification and scientific names	Use scientific names to classify organisms	Scientists use scientific names to identify organisms. Scientific names are made of two words. The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits. A genus is made up of one or more species. A species is a group of very similar organisms...	A crystal jellyfish's scientific name is Aequorea victoria. The first word of its scientific name is Aequorea. This organism and the crystal jellyfish are in the same genus and the same species! Both organisms have the same scientific name, Aequorea victoria. Goura victoria and Aequorea victoria are not in the same gen...
	Which solution has a higher concentration of green particles?	[ "Solution A", "neither; their concentrations are the same", "Solution B" ]	0	The diagram below is a model of two solutions. Each green ball represents one particle of solute.	closed choice	grade7	natural science	chemistry	Solutions	Compare concentrations of solutions	A solution is made up of two or more substances that are completely mixed. In a solution, solute particles are mixed into a solvent. The solute cannot be separated from the solvent by a filter. For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution...	In Solution A and Solution B, the green particles represent the solute. To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container. Use the concentration formula to find the number of green particles per millilit...
Not supported with pagination yet	What is the volume of a bowl of soup?	[ "11 cups", "11 gallons", "11 fluid ounces" ]	2	Select the best estimate.	closed choice	grade5	natural science	units-and-measurement	Units and measurement	Choose customary units of volume	Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Volume is a measurement of how much space something takes up. There are many different units of volume. When you are using customary units, volume may be written in units of fluid ounces, cups,...	The best estimate for the volume of a bowl of soup is 11 fluid ounces. 11 cups and 11 gallons are both too much.
	Think about the magnetic force between the magnets in each pair. Which of the following statements is true?	[ "The magnetic force is stronger in Pair 1.", "The magnetic force is stronger in Pair 2.", "The strength of the magnetic force is the same in both pairs." ]	0	The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material.	closed choice	grade3	natural science	physics	Magnets	Compare strengths of magnetic forces	Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces. The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other. You c...	Distance affects the strength of the magnetic force. When magnets are closer together, the magnetic force between them is stronger. The magnets in Pair 1 are closer together than the magnets in Pair 2. So, the magnetic force is stronger in Pair 1 than in Pair 2.
	Which property do these four objects have in common?	[ "translucent", "sweet", "fuzzy" ]	1	Select the best answer.	closed choice	grade5	natural science	physics	Materials	Compare properties of objects	An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it. Different objects can have properties in common. You can use these properties to put objects into groups. Grouping objects...	Look at each object. For each object, decide if it has that property. Sugar has a sweet taste. All four objects are sweet. A translucent object lets light through. But you cannot see clearly through a translucent object. The apple juice is translucent, but the chocolate bar and the peach are not. A fuzzy object is cove...
Not supported with pagination yet	Which figure of speech is used in this text? "This mattress is as soft as concrete," Tyler complained as he tested the bed in his hotel room.	[ "verbal irony", "personification" ]	0		closed choice	grade7	language science	figurative-language	Literary devices	Classify figures of speech	Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Alliteration is the repetition of sounds at the beginning of nearby words. What a lucky little lady you are! An allusion is a brief reference to something or someone well known, often from his...	The text uses verbal irony, which involves saying one thing but implying something very different. As soft as concrete shows verbal irony because concrete is not soft.
Not supported with pagination yet	Ken starts to pull the wagon across the yard. To move the wagon at the same speed each time, which friend does Ken need to pull with a larger force?	[ "a friend who weighs 32 pounds", "a friend who weighs 25 pounds" ]	0	Ken gives two friends a ride in his wagon. One friend sits in the wagon at a time.	closed choice	grade2	natural science	physics	Force and motion	How do mass and force affect motion?	A force is a push or a pull. A force can make an object start moving or stop an object that is moving. A force can also make an object speed up, slow down, or change direction. Forces can be different sizes. Think about trying to move a heavy object and a light object. Imagine you want to move them at the same speed. Y...	Look for the friend who is heavier. A friend who weighs 32 pounds is heavier than a friend who weighs 25 pounds. So, to move the wagon at the same speed each time, Ken needs to use a larger force to start moving the wagon with a friend who weighs 32 pounds.
	Which type of force from the girl opens the window?	[ "pull", "push" ]	1	A girl applies a force to a window. She uses the force to open the window.	closed choice	grade3	natural science	physics	Force and motion	Identify pushes and pulls	A force is a push or a pull that one object applies to a second object. The direction of a push is away from the object that is pushing. The direction of a pull is toward the object that is pulling.	The girl applies a force to the window panes. This force opens the window. The direction of this force is away from the girl. This force is a push.
	Which statement describes the Tallgrass Prairie National Preserve ecosystem?	[ "It has a medium amount of rain.", "It has soil that is poor in nutrients.", "It has cold winters and cool summers." ]	0	Figure: Tallgrass Prairie National Preserve. Tallgrass Prairie National Preserve is a prairie grassland ecosystem in eastern Kansas. The preserve is named for its grass, which can grow over five feet tall. This type of grass once covered large parts of North America, but it is now rare. Most of the tallgrass in North A...	closed choice	grade8	natural science	biology	Ecosystems	Describe ecosystems	An environment includes all of the biotic, or living, and abiotic, or nonliving, things in an area. An ecosystem is created by the relationships that form among the biotic and abiotic parts of an environment. There are many different types of terrestrial, or land-based, ecosystems. Here are some ways in which terrestri...	A prairie grassland is a type of ecosystem. Prairie grasslands have the following features: hot summers and cool winters, a medium amount of rain, and soil that is rich in nutrients. So, the following statement describes the Tallgrass Prairie National Preserve ecosystem: hot summers and cool winters, a medium amount of...
Not supported with pagination yet	Is a travel bag a good or a service?	[ "a good", "a service" ]	0		closed choice	grade2	social science	economics	Economics	Goods and services	Everything you can buy is either a good or a service. A good is something you can touch or hold in your hands. For example, a hammer is a good. A service is a job you pay someone else to do. For example, cooking food in a restaurant is a service.	To decide whether a travel bag is a good or a service, ask these questions: Is a travel bag something you can touch? Yes. Is a travel bag a job you might pay someone else to do? No. So, a travel bag is a good.
	What can Akira and Brooke trade to each get what they want?	[ "Brooke can trade her broccoli for Akira's oranges.", "Brooke can trade her almonds for Akira's tomatoes.", "Akira can trade her tomatoes for Brooke's sandwich.", "Akira can trade her tomatoes for Brooke's broccoli." ]	3	Trade happens when people agree to exchange goods and services. People give up something to get something else. Sometimes people barter, or directly exchange one good or service for another. Akira and Brooke open their lunch boxes in the school cafeteria. Both of them could be happier with their lunches. Akira wanted b...	closed choice	grade6	social science	economics	Basic economic principles	Trade and specialization		Akira wanted broccoli in her lunch and Brooke was hoping for tomatoes. Look at the labeled part of the images. Akira has tomatoes. Brooke has broccoli. They can trade tomatoes for broccoli to both be happier. Trading other things would not help either person get more items they want.
Not supported with pagination yet	What does the idiom in this text suggest? "Speak of the devil!" Whitney declared when Charlie strolled into the room.	[ "Whitney had just been speaking about Charlie.", "Whitney didn't trust Charlie." ]	0		closed choice	grade7	language science	figurative-language	Literary devices	Interpret figures of speech	Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. An idiom is an expression that cannot be understood literally. Its meaning must be learned. The assignment was a piece of cake.	The text uses an idiom, an expression that cannot be understood literally. The idiom speak of the devil suggests that Whitney had just been speaking about Charlie. People say this when the person they've just been speaking about coincidentally arrives, as if summoned.
Not supported with pagination yet	Which figure of speech is used in this text? "There's nothing I love more than skipping lunch," Mr. Crawford told the flight attendant when he learned that no food would be available on his cross-country flight.	[ "allusion", "verbal irony" ]	1		closed choice	grade8	language science	figurative-language	Literary devices	Classify figures of speech	Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Alliteration is the repetition of sounds at the beginning of nearby words. What a lucky little lady you are! An allusion is a brief reference to something or someone well known, often from his...	The text uses verbal irony, which involves saying one thing but implying something very different. Nothing I love more shows verbal irony because Mr. Crawford is probably upset that there isn't anything to eat.
	Identify the question that Lily's experiment can best answer.	[ "Do the temperatures inside boxes depend on the sizes of the boxes?", "Do the insides of white boxes get hotter than the insides of black boxes when the boxes are left in the sun?" ]	1	The passage below describes an experiment. Read the passage and then follow the instructions below. Lily glued lids onto 16 cardboard shoe boxes of equal size. She painted eight of the boxes black and eight of the boxes white. Lily made a small hole in the side of each box and then stuck a thermometer partially into e...	closed choice	grade6	natural science	science-and-engineering-practices	Designing experiments	Identify the experimental question	Experiments can be designed to answer specific questions. How can you identify the questions that a certain experiment can answer? In order to do this, you need to figure out what was tested and what was measured during the experiment. Imagine an experiment with two groups of daffodil plants. One group of plants was gr...
Not supported with pagination yet	Last year, 50,000 people lived in the city of Belmont. But since then, 8,000 people have moved away. What probably happened to the overall supply of houses for sale in Belmont?	[ "The supply probably went up.", "The supply probably went down." ]	0		closed choice	grade3	social science	economics	Supply and demand	Understand overall supply and demand	Overall supply is the total amount of a good or service that producers make and sell. There are several things that can make overall supply go up or down. The table below shows how changes to these things might affect overall supply. \| Resources \| Number of producers or suppliers \| Expected change in demand Supply goe...	The population of Belmont fell by 8,000 people. Many of the people who have left are probably trying to sell their houses. Since more people are trying to sell their houses, the number of suppliers of houses for sale in Belmont has gone up. So, the supply of houses for sale probably went up, too.
	What is this tarantula's scientific name?	[ "Aphonopelma johnnycashi", "Aphonopelma seemanni" ]	0	This species of tarantula was discovered near Folsom Prison in California. It was named after the musician Johnny Cash, who sang about the prison and was often called "The Man in Black."	closed choice	grade4	natural science	biology	Scientific names	Origins of scientific names	When a scientist identifies a new organism, he or she chooses its scientific name. Sometimes, an organism is named after the place where it was first found. Other times, an organism is named after the scientist who first identified it. Or, the scientific name might describe the organism's physical traits. Many of the w...	This organism's scientific name refers to Johnny Cash. The word johnnycashi refers to Johnny Cash. So, this tarantula's scientific name is Aphonopelma johnnycashi.
Not supported with pagination yet	Is the following trait inherited or acquired? Elijah plays hockey.	[ "inherited", "acquired" ]	1	Hint: Playing hockey takes practice.	closed choice	grade4	natural science	biology	Traits and heredity	Identify inherited and acquired traits	Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's lif...	People are not born knowing how to play hockey. Instead, some people learn how to play hockey. Playing the sport takes practice. So, playing hockey is an acquired trait.
	What is the capital of Washington?	[ "Seattle", "Olympia", "Denver", "Spokane" ]	1		closed choice	grade5	social science	geography	State capitals	Identify the 50 state capitals		Olympia is the capital of Washington.
Not supported with pagination yet	Complete the sentence. In this chemical reaction, carbon dioxide is a ().	[ "product", "reactant" ]	1	This passage describes a chemical reaction. Read the passage. Then, follow the instructions below. Plants make glucose, a sugar they can use for food, through a process called photosynthesis. During photosynthesis, plants use energy from sunlight to make glucose from water and carbon dioxide. In the process of making g...	closed choice	grade7	natural science	chemistry	Chemical reactions	Identify reactants and products	A chemical change occurs when new substances are formed from existing substances. This process is called a chemical reaction. In a chemical reaction, one or more substances change into one or more different substances. During the reaction, the atoms of the original substances are rearranged to form other substances. Th...	Read the underlined text carefully. Look for information about what happens to carbon dioxide in this chemical reaction. Plants make glucose, a sugar they can use for food, through a process called photosynthesis. During photosynthesis, plants use energy from sunlight to make glucose from water and carbon dioxide. In t...
Not supported with pagination yet	Which is a simple sentence?	[ "In the early morning, I drank tea by a spice stall as the Turkish bazaar came to life.", "Mr. Duran's afternoon lecture was about art and culture in Germany before World War II." ]	1		closed choice	grade6	language science	grammar	Sentences, fragments, and run-ons	Is the sentence simple, compound, or complex?	A clause is a group of words that contains both a subject and a predicate. An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence. the oranges on our tree are ripe The clause can stand alone. It is independent. aft...	The first sentence is the simple sentence. It is a single independent clause. Mr. Duran's afternoon lecture was about art and culture in Germany before World War II.
	Which bird's beak is also adapted to get nectar out of long flowers?	[ "ground hornbill", "violet sabrewing" ]	1	Green violetears live in the forests of Central and South America. The shape of the 's beak is adapted to get nectar out of long flowers. Figure: green violetear.	closed choice	grade5	natural science	biology	Adaptations	Animal adaptations: beaks, mouths, and necks	An adaptation is an inherited trait that helps an organism survive or reproduce. Adaptations can include both body parts and behaviors. The shape of a bird's beak is one example of an adaptation. Birds' beaks can be adapted in different ways. For example, a sharp hooked beak might help a bird tear through meat easily. ...	Look at the picture of the green violetear. The green violetear has a long, thin beak. Its beak is adapted to get nectar out of long flowers. The green violetear's long, thin beak can reach deep into the flowers. Now look at each bird. Figure out which bird has a similar adaptation. The violet sabrewing has a long, thi...
	Which of these states is farthest north?	[ "West Virginia", "Mississippi", "Nebraska", "Oklahoma" ]	2		closed choice	grade4	social science	geography	Maps	Read a map: cardinal directions	Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west. A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction. The north arrow points to the North Pole. On most maps, north...	To find the answer, look at the compass rose. Look at which way the north arrow is pointing. Nebraska is farthest north.
	What is the expected ratio of offspring with brown eyes to offspring with red eyes? Choose the most likely ratio.	[ "3:1", "1:3", "2:2", "4:0", "0:4" ]	3	In a group of guinea pigs, some individuals have brown eyes and others have red eyes. In this group, the gene for the eye color trait has two alleles. The allele for brown eyes (E) is dominant over the allele for red eyes (e). This Punnett square shows a cross between two guinea pigs.	closed choice	grade8	natural science	biology	Genes to traits	Use Punnett squares to calculate ratios of offspring types	Offspring phenotypes: dominant or recessive? How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a...	To determine how many boxes in the Punnett square represent offspring with brown eyes or red eyes, consider whether each phenotype is the dominant or recessive allele's version of the eye color trait. The question tells you that the E allele, which is for brown eyes, is dominant over the e allele, which is for red eyes...
Not supported with pagination yet	Is the following trait inherited or acquired? Becky can fly an airplane.	[ "acquired", "inherited" ]	0	Hint: Pilots have to learn how to fly an airplane.	closed choice	grade4	natural science	biology	Traits and heredity	Identify inherited and acquired traits	Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's lif...	People are not born knowing how to fly an airplane. Instead, some people learn how to fly airplanes. So, flying an airplane is an acquired trait.
Not supported with pagination yet	Which is a simple sentence?	[ "The audition for the part of Dracula will begin in just a few minutes.", "My assistant will distribute the report to everyone at the meeting while I make the introductions." ]	0		closed choice	grade5	language science	grammar	Sentences, fragments, and run-ons	Is the sentence simple, compound, or complex?	A clause is a group of words that contains both a subject and a predicate. An independent clause is a complete thought. It can stand alone as a sentence. A dependent clause is not a complete thought. It cannot stand alone as a sentence. the oranges on our tree are ripe The clause can stand alone. It is independent. aft...	The first sentence is the simple sentence. It is a single independent clause. The audition for the part of Dracula will begin in just a few minutes.
Not supported with pagination yet	How long is a sandbox?	[ "2 centimeters", "2 meters" ]	1	Select the better estimate.	closed choice	grade3	natural science	units-and-measurement	Units and measurement	Choose metric units of distance	Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Imagine being told that a pencil is 16 long. You might be thinking, 16 what? Is the pencil 16 centimeters long? 16 meters? 16 kilometers? The number 16 on its own does not give you much informa...	The better estimate for the length of a sandbox is 2 meters. 2 centimeters is too short.
	What is the capital of Washington?	[ "Louisville", "Seattle", "Olympia", "Spokane" ]	2		closed choice	grade3	social science	geography	State capitals	Identify the 50 state capitals		Olympia is the capital of Washington.
Not supported with pagination yet	Would you find the word scoop on a dictionary page with the following guide words? seam - sheriff	[ "yes", "no" ]	1		yes or no	grade7	language science	reference-skills	Reference skills	Use guide words	Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let...	Put the words in alphabetical order. Since scoop is not between the guide words seam - sheriff, it would not be found on that page.
	Which of these states is farthest east?	[ "Mississippi", "New York", "Montana", "Minnesota" ]	1		closed choice	grade2	social science	geography	Geography	Read a map: cardinal directions	Maps have four cardinal directions, or main directions. Those directions are north, south, east, and west. A compass rose is a set of arrows that point to the cardinal directions. A compass rose usually shows only the first letter of each cardinal direction. The north arrow points to the North Pole. On most maps, north...	To find the answer, look at the compass rose. Look at which way the east arrow is pointing. New York is farthest east.
	What is the capital of Vermont?	[ "Montpelier", "Boston", "Reno", "Burlington" ]	0		closed choice	grade5	social science	geography	State capitals	Identify state capitals of the Northeast		Montpelier is the capital of Vermont.
Not supported with pagination yet	What information supports the conclusion that Ryan acquired this trait?	[ "Ryan learned how to build a fire at summer camp.", "Ryan can cook food over a fire." ]	0	Read the description of a trait. Ryan knows how to build a fire.	closed choice	grade6	natural science	biology	Genes to traits	Inherited and acquired traits: use evidence to support a statement	Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits....
Not supported with pagination yet	Which correctly shows the title of a book?	[ "\"Harold and the Purple Crayon\"", "*Harold and the Purple Crayon*" ]	1		closed choice	grade3	language science	punctuation	Formatting	Formatting titles	The title of a book, movie, play, TV show, magazine, or newspaper should be in italics. If you write it by hand, it can be underlined instead. A Midsummer Night's Dream The title of a poem, song, or article should be in quotation marks. "You Are My Sunshine"	A book should be in italics. The correct title is Harold and the Purple Crayon.
	Think about the magnetic force between the magnets in each pair. Which of the following statements is true?	[ "The magnitude of the magnetic force is smaller in Pair 1.", "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is smaller in Pair 2." ]	0	The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes.	closed choice	grade8	natural science	physics	Velocity, acceleration, and forces	Compare magnitudes of magnetic forces	Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces. The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,...	Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them. Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 1 than in Pair 2. So, the magnit...
	Which of the following fossils is older? Select the more likely answer.	[ "fern", "dinosaur footprint" ]	1	This diagram shows fossils in an undisturbed sedimentary rock sequence.	closed choice	grade8	natural science	earth-science	Fossils	Compare ages of fossils in a rock sequence	A fossil is the preserved evidence of an ancient organism. Some fossils are formed from body parts such as bones or shells. Other fossils, such as footprints or burrows, are formed from traces of an organism's activities. Fossils are typically found in sedimentary rocks. Sedimentary rocks usually form in layers. Over t...	Look again at the fossils in the rock sequence diagram. Compare the positions of these fossils to determine which one is older: The dinosaur footprint fossil is in a deeper layer in the rock sequence than the fern fossil. So, the dinosaur footprint fossil is most likely older than the fern fossil.
	Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature?	[ "neither; the samples have the same temperature", "sample B", "sample A" ]	2	The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles.	closed choice	grade7	natural science	physics	Particle motion and energy	Identify how particle motion affects temperature and pressure	The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance. The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of...	The particles in both samples have the same average speed, but each particle in sample A has more mass than each particle in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B. Because the particles in sample A have the higher average kinetic energy, sample A mus...
	Which country is highlighted?	[ "Jamaica", "Haiti", "The Bahamas", "Grenada" ]	0		closed choice	grade6	social science	geography	The Americas: geography	Identify and select countries of the Caribbean		This country is Jamaica.
	Think about the magnetic force between the magnets in each pair. Which of the following statements is true?	[ "The magnitude of the magnetic force is greater in Pair 1.", "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is greater in Pair 2." ]	2	The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes and shapes.	closed choice	grade7	natural science	physics	Velocity, acceleration, and forces	Compare magnitudes of magnetic forces	Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces. The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,...	Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The larger the magnets, the greater the magnitude of the magnetic force between them. Magnet A is the same size in both pairs. But Magnet B is larger in Pair 2 than in Pair 1. So, the magnitud...
Not supported with pagination yet	Which word would you find on a dictionary page with the following guide words? patient - private	[ "pit", "public" ]	0		closed choice	grade3	language science	reference-skills	Reference skills	Use guide words	Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let...	Put the words in alphabetical order. Since pit is between the guide words patient - private, it would be found on that page.
	Which better describes the Shenandoah National Park ecosystem?	[ "It has warm, wet summers. It also has only a few types of trees.", "It has cold, wet winters. It also has soil that is poor in nutrients." ]	0	Figure: Shenandoah National Park. Shenandoah National Park is a temperate deciduous forest ecosystem in northern Virginia.	closed choice	grade3	natural science	biology	Ecosystems	Describe ecosystems	An ecosystem is formed when living and nonliving things interact in an environment. There are many types of ecosystems. Here are some ways in which ecosystems can differ from each other: the pattern of weather, or climate the type of soil or water the organisms that live there	A temperate deciduous forest is a type of ecosystem. Temperate deciduous forests have the following features: warm, wet summers and cold, wet winters, soil that is rich in nutrients, and only a few types of trees. So, Shenandoah National Park has warm, wet summers. It also has only a few types of trees.
Not supported with pagination yet	Which correctly shows the title of a book?	[ "\"Bugs in My Hair\"", "*Bugs in My Hair*" ]	1		closed choice	grade9	language science	punctuation	Formatting	Formatting titles	The title of a book, movie, play, TV show, magazine, or newspaper should be in italics. If you write it by hand, it can be underlined instead. A Midsummer Night's Dream The title of a poem, song, article, or short story should be in quotation marks. "You Are My Sunshine"	A book should be in italics. The correct title is Bugs in My Hair.
Not supported with pagination yet	What is the mass of an elephant?	[ "4,295 grams", "4,295 kilograms" ]	1	Select the better estimate.	closed choice	grade4	natural science	units-and-measurement	Units and measurement	Choose metric units of mass	Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Mass is a measurement of how much matter something contains. There are many different units of mass. When you are using metric units, mass may be written with units of grams or kilograms. There...	The better estimate for the mass of an elephant is 4,295 kilograms. 4,295 grams is too light.
Not supported with pagination yet	Which is smoother?	[ "concrete sidewalk", "silk necktie" ]	1		closed choice	grade2	natural science	physics	Materials	Compare properties of materials	Every object is made of one or more materials. A material is a type of matter. Wood, glass, metal, and plastic are common materials. A material has different properties. A material's properties tell you how it looks, feels, tastes, or smells.	Smooth is a property. A smooth material is not rough or bumpy. Look at each picture, one at a time. Imagine touching the material shown in each picture. Of the choices, the silk necktie is smoother. If you touch silk fabric, it will not feel rough.
	Which of the following could Emilia's test show?	[ "whether producing more insulin would help the bacteria grow faster", "whether different types of bacteria would need different nutrients to produce insulin", "whether she added enough nutrients to help the bacteria produce 20% more insulin" ]	2	People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. The passage below describes how the engineering-design process was used to test a solution to a problem. Read the passage. Then answer the ques...	closed choice	grade7	natural science	science-and-engineering-practices	Engineering practices	Evaluate tests of engineering-design solutions	People can use the engineering-design process to develop solutions to problems. One step in the process is testing if a potential solution meets the requirements of the design. How can you determine what a test can show? You need to figure out what was tested and what was measured. Imagine an engineer needs to design a...
	What did the scientists discover?	[ "a sea turtle that can fly", "a sea turtle with a glowing shell" ]	1	Read the passage about a new discovery. A few scientists were looking for sharks when they saw something surprising. They found a sea turtle that glowed! The turtle's shell was bright red and green. This was a new discovery. Scientists had never seen a sea turtle with a glowing shell before. Scientists want to know why...	closed choice	grade2	language science	reading-comprehension	Independent reading comprehension	Read and understand informational passages		Look at the passage. It tells you what the scientists discovered. A few scientists were looking for sharks when they saw something surprising. They found a sea turtle that glowed! The turtle's shell was bright red and green. This was a new discovery. Scientists had never seen a sea turtle with a glowing shell before.
Not supported with pagination yet	Which tense does the sentence use? Scientists will measure the rainfall in Lancaster.	[ "past tense", "future tense", "present tense" ]	1		closed choice	grade5	language science	verbs	Verb tense	Is the sentence in the past, present, or future tense?	Present tense verbs tell you about something that is happening now. Most present-tense verbs are regular. They have no ending, or they end in -s or -es. Two verbs are irregular in the present tense, to be and to have. You must remember their forms. Past tense verbs tell you about something that has already happened. Mo...	The sentence is in future tense. You can tell because it uses will before the main verb, measure. The verb tells you about something that is going to happen.
	Which continent is highlighted?	[ "Europe", "Asia", "North America", "Antarctica" ]	2		closed choice	grade5	social science	geography	Oceans and continents	Identify oceans and continents	A continent is one of the major land masses on the earth. Most people say there are seven continents.	This continent is North America.
	Which ocean is highlighted?	[ "the Atlantic Ocean", "the Indian Ocean", "the Arctic Ocean", "the Southern Ocean" ]	2		closed choice	grade7	social science	geography	Physical Geography	Oceans and continents	Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean.	This is the Arctic Ocean.
	Is a ring a solid or a liquid?	[ "a solid", "a liquid" ]	0		closed choice	grade2	natural science	physics	States of matter	Classify matter as solid or liquid	Solid and liquid are states of matter. Matter is anything that takes up space. Matter can come in different states, or forms. When matter is a solid, it has a shape of its own. Some solids can be bent or broken easily. Others are hard to bend or break. A glass cup is a solid. A sock is also a solid. When matter is a li...	A ring is a solid. A solid has a size and shape of its own. A ring keeps its shape, even when you take it off your finger.
	Which material is this screw driver made of?	[ "cardboard", "plastic" ]	1		closed choice	grade2	natural science	physics	Materials	Identify multiple materials in objects	A material is a type of matter. Wood, glass, metal, and plastic are common materials. Some objects are made of just one material. Most nails are made of metal. Other objects are made of more than one material. This hammer is made of metal and wood.	Look at the picture of the screw driver. This screw driver is made of two different materials. The handle is made of plastic. The rest of the screw driver is made of metal. Metal is a good material for tools. Metal is hard and can be made into many shapes.
Not supported with pagination yet	Use the evidence in the text to select the photosynthetic organism.	[ "Mossy frogs get the energy they need to live by eating insects. The frogs capture insects with their tongues.", "Sphagnum mosses get the energy they need to live from sugars. The mosses make these sugars from carbon dioxide and water." ]	1		closed choice	grade7	natural science	biology	Photosynthesis	Identify the photosynthetic organism	Organisms that carry out photosynthesis are called photosynthetic organisms. During photosynthesis, these organisms use light energy, carbon dioxide, and water to produce sugars and oxygen. Photosynthetic organisms also often have the following characteristics: They are producers, which are organisms that make their ow...	This organism is photosynthetic: The text tells you that Sphagnum mosses get energy from the sugars they make using carbon dioxide and water. This is evidence that the Sphagnum moss is a photosynthetic organism. This organism is not photosynthetic: The text does not provide evidence that the mossy frog is photosyntheti...
	Which part of the collard plant do we usually eat?	[ "the leaves", "the flowers", "the root" ]	0	People use collard plants for food. Photosynthesis makes food for the plant. We usually eat the part of the plant that does most of the photosynthesis.	closed choice	grade4	natural science	biology	Plants	Classify fruits and vegetables as plant parts	The fruits and vegetables we eat are parts of plants! Plants are made up of different structures. The different structures carry out important functions. The roots take in water and nutrients from the soil. They also hold the plant in place in the soil. The stem supports the plant. It carries food, water, and nutrients...	The part of the collard plant we usually eat is the leaves. They do most of the photosynthesis to make food for the plant.
	Think about the magnetic force between the magnets in each pair. Which of the following statements is true?	[ "The magnitude of the magnetic force is greater in Pair 1.", "The magnitude of the magnetic force is greater in Pair 2.", "The magnitude of the magnetic force is the same in both pairs." ]	1	The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different shapes.	closed choice	grade6	natural science	physics	Velocity, acceleration, and forces	Compare magnitudes of magnetic forces	Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces. The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,...	The magnets in Pair 1 attract. The magnets in Pair 2 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force. Distance affects the magnitude of the magnetic force. When there is a smaller distance between magnets, the magni...
	Which country is highlighted?	[ "Solomon Islands", "New Zealand", "the Federated States of Micronesia", "Palau" ]	3		closed choice	grade7	social science	geography	Oceania: geography	Identify and select countries of Oceania		This country is Palau.
	What is the capital of Kentucky?	[ "Frankfort", "Nashville", "Louisville", "Lexington" ]	0		closed choice	grade4	social science	geography	State capitals	Identify state capitals of the Southeast		Frankfort is the capital of Kentucky.
	Which property matches this object?	[ "colorful", "sticky" ]	0	Select the better answer.	closed choice	grade3	natural science	physics	Materials	Identify properties of an object	An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.	Look at the object. Think about each property. A colorful object has one or more bright colors. The kite is colorful. A sticky object can attach or stick to other things. The kite is not sticky.
	Which country is highlighted?	[ "Jamaica", "The Bahamas", "Cuba", "Haiti" ]	2		closed choice	grade6	social science	geography	The Americas: geography	Identify and select countries of the Caribbean		This country is Cuba. Does Cuba have any territorial disputes? Cuba claims to own Guantanamo Bay Naval Base, which is a disputed territory. In other words, multiple countries or groups claim that the area rightfully belongs to them. The United States controls the area and uses it as a military base and prison. A treaty...
	What is the probability that a Channel catfish produced by this cross will have a white body?	[ "4/4", "0/4", "2/4", "3/4", "1/4" ]	4	In a group of Channel catfish, some individuals have a brown body and others have a white body. In this group, the gene for the body color trait has two alleles. The allele for a brown body (B) is dominant over the allele for a white body (b). This Punnett square shows a cross between two Channel catfish.	closed choice	grade8	natural science	biology	Genes to traits	Use Punnett squares to calculate probabilities of offspring types	Offspring phenotypes: dominant or recessive? How do you determine an organism's phenotype for a trait? Look at the combination of alleles in the organism's genotype for the gene that affects that trait. Some alleles have types called dominant and recessive. These two types can cause different versions of the trait to a...
Not supported with pagination yet	How long is a pen?	[ "20 kilometers", "20 centimeters" ]	1	Select the better estimate.	closed choice	grade3	natural science	units-and-measurement	Units and measurement	Choose metric units of distance	Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Imagine being told that a pencil is 16 long. You might be thinking, 16 what? Is the pencil 16 centimeters long? 16 meters? 16 kilometers? The number 16 on its own does not give you much informa...	The better estimate for the length of a pen is 20 centimeters. 20 kilometers is too long.
	What is the capital of Pennsylvania?	[ "Harrisburg", "Trenton", "Pittsburgh", "Philadelphia" ]	0		closed choice	grade3	social science	geography	State capitals	Identify state capitals of the Northeast		Harrisburg is the capital of Pennsylvania.
Not supported with pagination yet	What kind of sentence is this? I write for the school newspaper.	[ "interrogative", "declarative" ]	1		closed choice	grade4	language science	punctuation	Sentences, fragments, and run-ons	Is the sentence declarative, interrogative, imperative, or exclamatory?	There are four kinds of sentences. A declarative sentence is a statement. It tells about something. A declarative sentence always ends with a period. I have an older brother and a younger sister. An interrogative sentence is a question. It asks something. An interrogative sentence always ends with a question mark. How ...	The sentence tells about something, and it ends with a period. It is a declarative sentence.
	Which property matches this object?	[ "shiny", "yellow" ]	0	Select the better answer.	closed choice	grade2	natural science	physics	Materials	Identify properties of an object	An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells.	Look at the object. Think about each property. A shiny object reflects a lot of light. The silver ring is shiny. Yellow is a color. This color is yellow. The silver ring is not yellow.
	Think about the magnetic force between the magnets in each pair. Which of the following statements is true?	[ "The magnitude of the magnetic force is smaller in Pair 2.", "The magnitude of the magnetic force is smaller in Pair 1.", "The magnitude of the magnetic force is the same in both pairs." ]	1	The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material, but some of them are different sizes.	closed choice	grade6	natural science	physics	Velocity, acceleration, and forces	Compare magnitudes of magnetic forces	Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces. The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,...	Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the same material. The smaller the magnets, the smaller the magnitude of the magnetic force between them. Magnet A is the same size in both pairs. But Magnet B is smaller in Pair 1 than in Pair 2. So, the magnit...
	Compare the average kinetic energies of the particles in each sample. Which sample has the higher temperature?	[ "neither; the samples have the same temperature", "sample B", "sample A" ]	2	The diagrams below show two pure samples of gas in identical closed, rigid containers. Each colored ball represents one gas particle. Both samples have the same number of particles.	closed choice	grade8	natural science	physics	Particle motion and energy	Identify how particle motion affects temperature and pressure	The temperature of a substance depends on the average kinetic energy of the particles in the substance. The higher the average kinetic energy of the particles, the higher the temperature of the substance. The kinetic energy of a particle is determined by its mass and speed. For a pure substance, the greater the mass of...	The particles in both samples have the same average speed, but each particle in sample A has more mass than each particle in sample B. So, the particles in sample A have a higher average kinetic energy than the particles in sample B. Because the particles in sample A have the higher average kinetic energy, sample A mus...
	In this food chain, the macroalgae is a producer. Why?	[ "It eats another organism.", "It makes its own food." ]	1	This diagram shows a food chain from the River Frome, a freshwater ecosystem in England.	closed choice	grade4	natural science	biology	Ecosystems	Identify roles in food chains	Every organism needs food to stay alive. Organisms get their food in different ways. A food chain shows how organisms in an ecosystem get their food. Producers make their own food. Many producers use carbon dioxide, water, and sunlight to make sugar. This sugar is food for the producer. Consumers eat other organisms. C...	In this food chain, the macroalgae is a producer because it makes its own food. The macroalgae uses carbon dioxide, water, and sunlight to make its own food.
	Think about the magnetic force between the magnets in each pair. Which of the following statements is true?	[ "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is smaller in Pair 1.", "The magnitude of the magnetic force is smaller in Pair 2." ]	1	The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material.	closed choice	grade7	natural science	physics	Velocity, acceleration, and forces	Compare magnitudes of magnetic forces	Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces. The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,...	Distance affects the magnitude of the magnetic force. When there is a greater distance between magnets, the magnitude of the magnetic force between them is smaller. There is a greater distance between the magnets in Pair 1 than in Pair 2. So, the magnitude of the magnetic force is smaller in Pair 1 than in Pair 2.
	What is the capital of Massachusetts?	[ "Cambridge", "Boston", "Trenton", "New Orleans" ]	1		closed choice	grade4	social science	geography	State capitals	Identify state capitals of the Northeast		Boston is the capital of Massachusetts.
	Think about the magnetic force between the magnets in each pair. Which of the following statements is true?	[ "The magnitude of the magnetic force is greater in Pair 1.", "The magnitude of the magnetic force is the same in both pairs.", "The magnitude of the magnetic force is greater in Pair 2." ]	1	The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material.	closed choice	grade6	natural science	physics	Velocity, acceleration, and forces	Compare magnitudes of magnetic forces	Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. These pulls and pushes between magnets are called magnetic forces. The strength of a force is called its magnitude. The greater the magnitude of the magnetic force between two magnets,...	The magnets in Pair 2 attract. The magnets in Pair 1 repel. But whether the magnets attract or repel affects only the direction of the magnetic force. It does not affect the magnitude of the magnetic force. Both magnet sizes and distance affect the magnitude of the magnetic force. The sizes of the magnets in Pair 1 are...
Not supported with pagination yet	What is the volume of a paper drinking cup?	[ "185 liters", "185 milliliters" ]	1	Select the better estimate.	closed choice	grade5	natural science	units-and-measurement	Units and measurement	Choose metric units of volume	Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Volume is a measurement of how much space something takes up. There are many different units of volume. When you are using metric units, volume may be written in units of milliliters or liters....	The better estimate for the volume of a paper drinking cup is 185 milliliters. 185 liters is too much.
Not supported with pagination yet	What information supports the conclusion that Harry inherited this trait?	[ "Harry's biological mother has long hair. Harry also has long hair.", "Harry's biological parents have wavy hair.", "Harry uses a headband to keep his wavy hair out of his face." ]	1	Read the description of a trait. Harry has wavy hair.	closed choice	grade7	natural science	biology	Genes to traits	Inherited and acquired traits: use evidence to support a statement	Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down from biological parents to their offspring through genes. Genes are pieces of hereditary material that contain the instructions that affect inherited traits....
	Select the organism in the same genus as the Victoria crowned pigeon.	[ "Goura scheepmakeri", "Aequorea victoria", "Falco sparverius" ]	0	This organism is a Victoria crowned pigeon. Its scientific name is Goura victoria.	closed choice	grade5	natural science	biology	Scientific names	Use scientific names to classify organisms	Scientists use scientific names to identify organisms. Scientific names are made of two words. The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits. A genus is made up of one or more species. A species is a group of very similar organisms...	A Victoria crowned pigeon's scientific name is Goura victoria. The first word of its scientific name is Goura. Goura scheepmakeri is in the genus Goura. The first word of its scientific name is Goura. So, Goura scheepmakeri and Goura victoria are in the same genus. Aequorea victoria and Goura victoria are not in the sa...
Not supported with pagination yet	Which drop of dish soap has a lower temperature?	[ "the drop of dish soap with more thermal energy", "the drop of dish soap with less thermal energy" ]	1	Two drops of dish soap are identical except for their thermal energies.	closed choice	grade6	natural science	physics	Thermal energy	How are temperature and mass related to thermal energy?	Matter is made of tiny particles called atoms. Atoms are always moving. The energy of moving atoms is called thermal energy. The total amount of thermal energy in matter depends on three things: the type of matter, the amount of matter, and how fast the atoms are moving. Temperature measures how hot or cold matter is. ...	The two drops of dish soap are made of the same material and have the same mass. So, the drop of dish soap with less thermal energy has a lower temperature.
	Which material is this belt made of?	[ "ceramic", "leather" ]	1		closed choice	grade2	natural science	physics	Materials	Identify multiple materials in objects	A material is a type of matter. Wood, glass, metal, and plastic are common materials. Some objects are made of just one material. Most nails are made of metal. Other objects are made of more than one material. This hammer is made of metal and wood.	Look at the picture of the belt. The belt is made of two materials. The buckle is made of metal. The rest of the belt is made of leather.
Not supported with pagination yet	Which word would you find on a dictionary page with the following guide words? scribble - spade	[ "sleepy", "sweat" ]	0		closed choice	grade4	language science	reference-skills	Reference skills	Use guide words	Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let...	Put the words in alphabetical order. Since sleepy is between the guide words scribble - spade, it would be found on that page.
Not supported with pagination yet	Which is a run-on sentence?	[ "The event was exciting it had music, a show and food.", "Tina will ride her bike this weekend." ]	0		closed choice	grade3	language science	writing-strategies	Sentences, fragments, and run-ons	Is it a complete sentence, a fragment, or a run-on?	A sentence is a group of words that forms a complete thought. It has both a subject and a verb. My friends walk along the path. A sentence fragment is a group of words that does not express a complete thought. It is usually missing a subject or a verb. Knows the answer. This is a sentence fragment. It is missing a subj...	The event was exciting it had music, a show and food is a run-on sentence. It has two sentences that are joined without end punctuation: The event was exciting and It had music, a show and food.
Not supported with pagination yet	Which figure of speech is used in this text? The moon is a friend for the lonesome to talk with. —Carl Sandburg, "Moonlight and Maggots"	[ "personification", "simile" ]	0		closed choice	grade10	language science	figurative-language	Literary devices	Classify figures of speech: review	Figures of speech are words or phrases that use language in a nonliteral or unusual way. They can make writing more expressive. Alliteration is the repetition of sounds at the beginning of nearby words. What a lucky little lady you are! An allusion is a brief reference to something or someone well known, often from his...	The text uses personification, giving human characteristics to nonhuman things. The moon is a friend describes the moon as if it were human.
	Select the organism in the same species as the North American beaver.	[ "Castor canadensis", "Ovis orientalis", "Alouatta caraya" ]	0	This organism is a North American beaver. Its scientific name is Castor canadensis.	closed choice	grade4	natural science	biology	Scientific names	Use scientific names to classify organisms	Scientists use scientific names to identify organisms. Scientific names are made of two words. The first word in an organism's scientific name tells you the organism's genus. A genus is a group of organisms that share many traits. A genus is made up of one or more species. A species is a group of very similar organisms...	A North American beaver's scientific name is Castor canadensis. Ovis orientalis does not have the same scientific name as a North American beaver. So, Castor canadensis and Ovis orientalis are not in the same species. Alouatta caraya does not have the same scientific name as a North American beaver. So, Castor canadens...
	Is corundum a mineral or a rock?	[ "mineral", "rock" ]	0	Corundum has the following properties: fixed crystal structure solid pure substance found in nature very hard not made by organisms	closed choice	grade8	natural science	earth-science	Rocks and minerals	Identify rocks and minerals	Minerals are the building blocks of rocks. A rock can be made of one or more minerals. Minerals and rocks have the following properties: Property \| Mineral \| Rock It is a solid. \| Yes \| Yes It is formed in nature. \| Yes \| Yes It is not made by organisms. \| Yes \| Yes It is a pure substance. \| Yes \| No It has a fixed cry...	Corundum has all the properties of a mineral. So, corundum is a mineral.
	What is the capital of Iowa?	[ "Des Moines", "Cedar Rapids", "Baltimore", "Pierre" ]	0		closed choice	grade3	social science	geography	State capitals	Identify state capitals of the Midwest		Des Moines is the capital of Iowa.
	Does this passage describe the weather or the climate?	[ "weather", "climate" ]	1	Figure: Marseille. Marseille is a town on the southern coast of France. Cold winds from the north, called mistral winds, are common in Marseille each year during late winter and early spring. Hint: Weather is what the atmosphere is like at a certain place and time. Climate is the pattern of weather in a certain place.	closed choice	grade5	natural science	earth-science	Weather and climate	Weather and climate around the world	The atmosphere is the layer of air that surrounds Earth. Both weather and climate tell you about the atmosphere. Weather is what the atmosphere is like at a certain place and time. Weather can change quickly. For example, the temperature outside your house might get higher throughout the day. Climate is the pattern of ...	Read the passage carefully. Marseille is a town on the southern coast of France. Cold winds from the north, called mistral winds, are common in Marseille each year during late winter and early spring. The underlined part of the passage tells you about the usual wind patterns in Marseille. This passage does not describe...
Not supported with pagination yet	Compare the motion of two motorboats. Which motorboat was moving at a higher speed?	[ "a motorboat that moved 135miles in 10hours", "a motorboat that moved 240miles in 10hours" ]	1		closed choice	grade2	natural science	physics	Force and motion	Compare the speeds of moving objects	An object's speed tells you how fast the object is moving. Speed depends on both distance and time. Distance tells you how far the object has moved. One unit used to measure distance is the mile. Time tells you how long the object has spent moving. One unit used to measure time is the hour. Think about two objects movi...	Look at the distance each motorboat moved and the time it took to move that distance. One motorboat moved 240 miles in 10 hours. The other motorboat moved 135 miles in 10 hours. Notice that each motorboat spent the same amount of time moving. The motorboat that moved 240 miles moved a farther distance in that time. So,...
Not supported with pagination yet	Which word would you find on a dictionary page with the following guide words? papoose - pliers	[ "pedal", "purple" ]	0		closed choice	grade4	language science	reference-skills	Reference skills	Use guide words	Guide words appear on each page of a dictionary. They tell you the first word and last word on the page. The other words on the page come between the guide words in alphabetical order. To put words in alphabetical order, put them in order by their first letters. If the first letters are the same, look at the second let...	Put the words in alphabetical order. Since pedal is between the guide words papoose - pliers, it would be found on that page.
	What is the capital of Virginia?	[ "Baton Rouge", "Richmond", "Arlington", "Norfolk" ]	1		closed choice	grade4	social science	geography	State capitals	Identify state capitals of the Southeast		Richmond is the capital of Virginia.
	Which property do these two objects have in common?	[ "sticky", "yellow" ]	1	Select the better answer.	closed choice	grade2	natural science	physics	Materials	Compare properties of objects	An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Different objects can have the same properties. You can use these properties to put objects into groups.	Look at each object. For each object, decide if it has that property. A sticky object can stick to other things. Neither of the objects are sticky. Yellow is a color. This color is yellow. Both objects are yellow. The property that both objects have in common is yellow.
Not supported with pagination yet	Which sentence is more formal?	[ "Dr. Alexander and her team traveled by horseback to a remote village that had no modern medical services.", "Dr. Alexander and her team took horses and went to a place that had no modern medical services." ]	0		closed choice	grade8	language science	writing-strategies	Author's purpose and tone	Which sentence is more formal?	Formal writing is used for essays, business letters, and reports. The following types of informal language should be avoided in formal writing: Type \| Examples slang \| cool, awesome idioms \| knock your socks off conversational language \| gonna, kinda, yeah abbreviated language \| ASAP, FYI overly simple or imprecise lan...	The first sentence is less formal. You can tell because it uses overly simple or imprecise language (took, went). The second sentence uses more precise language, so it is more formal overall.
Not supported with pagination yet	What is the source of the allusion in the sentence below? When I learned the details of Lillian's Faustian bargain, I was in disbelief.	[ "literature", "Roman mythology" ]	0		closed choice	grade7	language science	figurative-language	Literary devices	Recall the source of an allusion	An allusion is a brief mention of something or someone well known, often from mythology, history, or literature. An allusion lets you reference ideas from an entire story in just a few words. "I'd better get home before I turn into a pumpkin!" Lila remarked. Here, Lila alludes to the fairy tale "Cinderella," in which C...	The source of the allusion Faustian bargain is literature. In a play by Christopher Marlowe based on the legend of Faust, a man strikes a deal with the devil. Disregarding the long-term consequences of his actions, he sells his soul in exchange for power. The allusion Faustian bargain means a compromise of one's values...
Not supported with pagination yet	How long does it take to bake lasagna in the oven?	[ "42 hours", "42 minutes" ]	1	Select the better estimate.	closed choice	grade3	natural science	units-and-measurement	Units and measurement	Choose units of time	Measurements are written with both a number and a unit. The unit comes after the number. The unit shows what the number means. Imagine being told that the bus leaves in 7. You might be thinking, 7 what? Does the bus leave in 7 minutes? 7 seconds? The number 7 on its own does not give you much information about when the...	The better estimate for how long it takes to bake lasagna in the oven is 42 minutes. 42 hours is too slow.
	What is the capital of Idaho?	[ "Boise", "Topeka", "Juneau", "Buffalo" ]	0		closed choice	grade3	social science	geography	State capitals	Identify the 50 state capitals		Boise is the capital of Idaho.
Not supported with pagination yet	Is the following trait inherited or acquired? Most humans can sense many different smells.	[ "inherited", "acquired" ]	0		closed choice	grade5	natural science	biology	Traits and heredity	Identify inherited and acquired traits	Organisms, including people, have both inherited and acquired traits. Inherited and acquired traits are gained in different ways. Inherited traits are passed down through families. Children gain these traits from their parents. Inherited traits do not need to be learned. Acquired traits are gained during a person's lif...	Babies do not need to learn how to smell. They are able to smell naturally. So, the ability to smell is an inherited trait.
Not supported with pagination yet	Which correctly shows the title of a book?	[ "*Island of the Blue Dolphins*", "\"Island of the Blue Dolphins\"" ]	0		closed choice	grade6	language science	punctuation	Formatting	Formatting titles	The title of a book, movie, play, TV show, magazine, or newspaper should be in italics. If you write it by hand, it can be underlined instead. A Midsummer Night's Dream The title of a poem, song, article, or short story should be in quotation marks. "You Are My Sunshine"	A book should be in italics. The correct title is Island of the Blue Dolphins.
Not supported with pagination yet	Complete the sentence. Lighting a match is a ().	[ "physical change", "chemical change" ]	1		closed choice	grade2	natural science	chemistry	Physical and chemical change	Identify physical and chemical changes	Chemical changes and physical changes are two ways matter can change. In a chemical change, the type of matter changes. Burning a piece of paper is a chemical change. The paper changes into ash and smoke. In a physical change, the type of matter stays the same. Cutting a piece of paper is a physical change. The cut pie...	Lighting a match is a chemical change. The match catches fire and turns into ash. Ash is a different type of matter than the match.
	Which property do these two objects have in common?	[ "breakable", "hard" ]	1	Select the better answer.	closed choice	grade2	natural science	physics	Materials	Compare properties of objects	An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Different objects can have the same properties. You can use these properties to put objects into groups.	Look at each object. For each object, decide if it has that property. A breakable object will break into pieces if you drop it. Neither of the objects are breakable. A hard object keeps its shape when you squeeze it. Both objects are hard. The property that both objects have in common is hard.
	Which ocean is highlighted?	[ "the Atlantic Ocean", "the Pacific Ocean", "the Southern Ocean", "the Indian Ocean" ]	1		closed choice	grade6	social science	geography	Physical Geography	Oceans and continents	Oceans are huge bodies of salt water. The world has five oceans. All of the oceans are connected, making one world ocean.	This is the Pacific Ocean.
	Which of the following was an independent variable in this experiment?	[ "the number of woodpeckers that visited the bird feeders", "the type of food used in the bird feeders" ]	1	The passage below describes an experiment. Read the passage and think about the variables that are described. Rick often saw woodpeckers perched in trees in his backyard, but he never saw them at his bird feeders. Rick usually filled his feeders with sunflower seeds. He wondered if he could attract woodpeckers by addi...	closed choice	grade6	natural science	science-and-engineering-practices	Designing experiments	Identify independent and dependent variables	Experiments have variables, or parts that change. You can design an experiment to find out how one variable affects another variable. For example, imagine that you want to find out if fertilizer affects the number of tomatoes a tomato plant grows. To answer this question, you decide to set up two equal groups of tomato...
	Which property matches this object?	[ "blue", "rough" ]	0	Select the better answer.	closed choice	grade3	natural science	physics	Materials	Identify properties of an object	An object has different properties. A property of an object can tell you how it looks, feels, tastes, or smells. Properties can also tell you how an object will behave when something happens to it.	Look at the object. Think about each property. A rough object feels scratchy when you touch it. The water slide is not rough. Blue is a color. This color is blue. The water slide is blue.
Not supported with pagination yet	Select the vertebrate.	[ "ladybug", "earthworm", "mosquito", "rainbow trout" ]	3	Hint: Mammals, birds, fish, reptiles, and amphibians are vertebrates.	closed choice	grade5	natural science	biology	Classification	Identify vertebrates and invertebrates	Vertebrates and invertebrates are both groups of animals. A vertebrate has a backbone. The backbone is made of many bones in an animal's back. A vertebrate's backbone helps connect the different parts of its body. In the drawings below, each vertebrate's backbone is colored orange. An invertebrate does not have a backb...	A mosquito is an insect. Like other insects, a mosquito is an invertebrate. It does not have a backbone. It has an exoskeleton. A ladybug is an insect. Like other insects, a ladybug is an invertebrate. It does not have a backbone. It has an exoskeleton. An earthworm is a worm. Like other worms, an earthworm is an inver...
	Select the bird below.	[ "ostrich", "Japanese tree frog" ]	0	Birds have feathers, two wings, and a beak. A woodpecker is an example of a bird.	closed choice	grade2	natural science	biology	Classification	Identify mammals, birds, fish, reptiles, and amphibians	Birds, mammals, fish, reptiles, and amphibians are groups of animals. The animals in each group have traits in common. Scientists sort animals into groups based on traits they have in common. This process is called classification.	An ostrich is a bird. It has feathers, two wings, and a beak. A Japanese tree frog is an amphibian. It has moist skin and begins its life in water.
Not supported with pagination yet	Which announcement is more formal?	[ "The Danville Law Firm is so happy to tell you . . .", "The Danville Law Firm is pleased to announce . . ." ]	1		closed choice	grade11	language science	writing-strategies	Audience, purpose, and tone	Which text is most formal?	Informal writing is typically used in casual situations or when communicating with someone you know well. Informal language often expresses familiarity and tends to sound more like speech. It uses more conversational language, such as slang, idioms, abbreviations, imprecise language, and contractions. Formal writing is...	The second announcement is more formal. It uses more elevated language (pleased to announce). The other announcement sounds more conversational (so happy).
	Will these magnets attract or repel each other?	[ "repel", "attract" ]	1	Two magnets are placed as shown. Hint: Magnets that attract pull together. Magnets that repel push apart.	closed choice	grade2	natural science	physics	Magnets	Identify magnets that attract or repel	Magnets can pull or push on each other without touching. When magnets attract, they pull together. When magnets repel, they push apart. Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends. Every magnet has two poles, called north and south. Here are some examples of magnets....	Will these magnets attract or repel? To find out, look at which poles are closest to each other. The north pole of one magnet is closest to the south pole of the other magnet. Poles that are different attract. So, these magnets will attract each other.

Subsets and Splits

Validation Subject & Topic Summary

Reveals the distribution and count of images across different subjects, topics, and categories, highlighting the most prevalent combinations.

SQL Console for derek-thomas/ScienceQA

This query provides a balanced sample of entries across different topics where images are missing, allowing for a more representative analysis of text-only data.

SQL Console for derek-thomas/ScienceQA

This query provides a balanced sample of text entries across different topics, ensuring that each topic is proportionally represented, which is useful for further analysis or model training.

Random Sample by Topic Ratio

This query balances the dataset by randomly selecting a proportional number of items from each topic to create a balanced subset of 3000 items, revealing how well-represented each topic is in the dataset.

Topic Counts by Grade

Provides a breakdown of the number of questions by topic (physics, chemistry, biology, geography) for each grade level, revealing the distribution of question types.

Validation Category Counts

Counts the number of unique questions per category, helping to understand the distribution of questions across different categories.

SQL Console for derek-thomas/ScienceQA

Identifies categories, questions, and answers that appear more than four times in the validation dataset with images, highlighting common or repetitive entries.

ScienceQA Validation Grouped Data

Provides a count of images and overall occurrences for each combination of subject, topic, category, and answer, helping to identify popular or common configurations.

Train Data with Numeric Choices

This query identifies distinct rows in the dataset where one of the elements in the choices column contains a number and the image column is null, providing insight into data completeness and specific patterns in the choices.

Physics Train with Images and Lectures

Retrieves physics educational records with images and lectures for specific grade levels, providing basic filtering but offering limited analytical insight beyond data availability.

Physics Q&As with Images

Retrieves physics-related training examples with images for specific grade levels, providing basic filtered data but offering limited analytical insight beyond simple categorization.

Physics Questions Gr 2-6 With Images

Retrieves physics-related test items with images for specific grade levels, providing basic filtered data but offering limited analytical insights beyond simple data retrieval.

Filter Text-only Train Questions

Retrieves questions and related metadata from the dataset excluding those with images, offering basic data filtering.

Skills Without Images

Counts the number of skills where the image is missing, providing a basic overview of incomplete data.