image image | question string | choices list | answer class label | hint string | task string | grade string | subject string | topic string | category string | skill string | lecture string | solution string |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Not supported with pagination yet | What is the volume of a soda bottle cap? | [
"12 liters",
"12 milliliters"
] | 11 | 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 soda bottle cap is 12 milliliters.
12 liters is too much. |
Not supported with pagination yet | Based on this information, what is this cucumber plant's genotype for the fruit texture gene? | [
"FF",
"bumpy fruit"
] | 00 | In a group of cucumber plants, some individuals have bumpy fruit and others have smooth fruit. In this group, the gene for the fruit texture trait has two alleles. The allele F is for bumpy fruit, and the allele f is for smooth fruit.
A certain cucumber plant from this group has bumpy fruit. This plant has two alleles ... | closed choice | grade8 | natural science | biology | Genes to traits | Genetics vocabulary: genotype and phenotype | All organisms have pieces of hereditary material called genes, which are passed from parents to offspring. Genes contain instructions for building the parts of an organism. An organism's genes affect its observable traits, including its appearance, its behavior, and which diseases it may have. Genes may have different ... | An organism's genotype for a gene is its combination of alleles for that gene. The cucumber plant has two alleles for bumpy fruit (F). So, the plant's genotype for the fruit texture gene is FF. |
Not supported with pagination yet | Select the vertebrate. | [
"giant octopus",
"saturn butterfly",
"earthworm",
"robin"
] | 33 | 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 saturn butterfly is an insect. Like other insects, a saturn butterfly 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 invertebrate. It does not have a backbone. It has a soft body.
Like other octopuses, a giant octopus is an inverteb... |
Not supported with pagination yet | Which sentence states a fact? | [
"It is hard to understand Australian people's accents.",
"Australia is a continent in the Southern Hemisphere."
] | 11 | closed choice | grade8 | social science | civics | Social studies skills | Identify facts and opinions | A fact is something that can be proved true by research or observation.
George Washington became president of the United States in 1789.
This statement is a fact. It can be proved by researching what year George Washington was inaugurated president.
An opinion is something that a person believes, thinks, or feels. An o... | The second sentence states a fact.
Australia is a continent in the Southern Hemisphere.
It can be proved by finding Australia on a globe.
The first sentence states an opinion.
It is hard to understand Australian people's accents.
Hard shows what a person believes, thinks, or feels. Another person might have a different... | |
Not supported with pagination yet | Is picking apples a good or a service? | [
"a good",
"a service"
] | 11 | 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 picking apples is a good or a service, ask these questions:
Is picking apples something you can touch? No.
Is picking apples a job you might pay someone else to do? Yes.
So, picking apples is a service. | |
What is the name of the colony shown? | [
"Virginia",
"Delaware",
"Georgia",
"West Virginia"
] | 00 | closed choice | grade8 | social science | us-history | Colonial America | Identify the Thirteen Colonies | The colony is Virginia.
The Virginia Colony included land that would later become part of the state of West Virginia. West Virginia was never its own colony. | |||
What is the capital of Louisiana? | [
"Atlanta",
"Frankfort",
"New Orleans",
"Baton Rouge"
] | 33 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Baton Rouge is the capital of Louisiana. | |||
Which of the following was a dependent variable in this experiment? | [
"the number of bacteria in a drop of tea",
"the amount of time that the tea sat on the desk"
] | 00 | The passage below describes an experiment. Read the passage and think about the variables that are described.
Every day at work, Valentina poured a large cup of tea that she drank throughout the morning. She wondered how much bacteria might be growing in her cup of tea as the morning went on.
To find out, Valentina fi... | 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... | ||
Not supported with pagination yet | Answer the riddle.
I smell good.
I can come in many colors.
I grow in a garden.
What am I? | [
"a flower",
"a bird"
] | 00 | closed choice | grade1 | language science | vocabulary | Comprehension strategies | What am I? | A flower smells good.
A flower can come in many colors.
A flower grows in a garden. | ||
Complete the sentence.
The mutation in the () affected the structure and function of the (). | [
"KRT13 gene . . . keratin protein",
"keratin protein . . . KRT13 gene"
] | 00 | The following passage describes the effects of a gene mutation, which is a permanent change in a gene. Read the passage and then follow the instructions below.
Keratins are strong proteins that provide structure and protection for many tissues in the human body. For example, the tissue on the inside of the mouth, call... | closed choice | grade6 | natural science | biology | Genes to traits | Describe the effects of gene mutations on organisms | An organism's genes contain information about its proteins. Each gene encodes, or contains the instructions for making, one protein or a group of proteins.
A permanent change in a gene is called a mutation. Because a mutation changes a gene, the mutation may change the structure of the protein encoded by that gene.
The... | A mutation in a gene may affect the protein it encodes.
So, the mutation in the KRT13 gene affected the structure and function of the keratin protein. | |
Not supported with pagination yet | Which logical fallacy is used in the text?
Most students who take the school's Advanced Computer Science class go on to major in computer science. Clearly, the course must be the reason why students major in computer science. | [
"guilt by association: a negative association intended to discredit someone or something",
"slippery slope fallacy: the false assumption that a small first step will lead to extreme consequences",
"false causation: the assumption that because two things happened together, one caused the other"
] | 22 | closed choice | grade11 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that the school's Advanced Computer Science class is the reason students choose to major in computer science. The text states that most of the students who take that class continue on with the major. However, the class isn't necessarily the reason they do so. For example, the students who take the advan... | |
Which country is highlighted? | [
"the Dominican Republic",
"Saint Lucia",
"Grenada",
"Dominica"
] | 33 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Dominica. | |||
What is the capital of Nevada? | [
"Carson City",
"Reno",
"Las Vegas",
"Cheyenne"
] | 00 | closed choice | grade4 | social science | geography | State capitals | Identify state capitals of the West | Carson City is the capital of Nevada. | |||
Which continent is highlighted? | [
"Europe",
"Africa",
"Asia",
"North America"
] | 11 | 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 Africa. | ||
Select the fish below. | [
"goldfish",
"European green toad"
] | 00 | Fish live underwater. They have fins, not limbs. A manta ray is an example of a fish. | closed choice | grade3 | 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. | A European green toad is an amphibian. It has moist skin and begins its life in water.
Toads do not have teeth! They swallow their food whole.
A goldfish is a fish. It lives underwater. It has fins, not limbs.
Goldfish are popular as pets in many countries today. They were first kept as pets by people in ancient China. | |
Not supported with pagination yet | What kind of sentence is this?
How does the new mayor intend to fulfill his campaign promise to bring new jobs to the city? | [
"declarative",
"interrogative",
"imperative"
] | 11 | closed choice | grade9 | 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 and always ends with a period.
The nurse told Mr. Abrams to roll up his sleeve so that she could check his blood pressure.
An imperative sentence makes a request or a demand and usually ends with a period. If a demand shows strong feeling, it can ... | The sentence asks a question and ends with a question mark. It is an interrogative sentence. | |
Which of these states is farthest east? | [
"Ohio",
"New Jersey",
"Kansas",
"South Carolina"
] | 11 | 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 Jersey is farthest east. | ||
Which country is highlighted? | [
"Barbados",
"Saint Kitts and Nevis",
"Jamaica",
"Antigua and Barbuda"
] | 33 | closed choice | grade6 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Antigua and Barbuda. | |||
Not supported with pagination yet | What information supports the conclusion that Kaylee inherited this trait? | [
"Kaylee's parents have red hair. They passed down this trait to Kaylee.",
"Kaylee and her mother both wear their hair in braids."
] | 00 | Read the description of a trait.
Kaylee has red hair. | closed choice | grade3 | natural science | biology | Heredity | 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 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... | |
What is the capital of Washington? | [
"Orlando",
"Spokane",
"Seattle",
"Olympia"
] | 33 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the West | Olympia is the capital of Washington. | |||
Not supported with pagination yet | Does this passage describe the weather or the climate?
Where Nicole lives, winter is the rainiest season of the year. | [
"weather",
"climate"
] | 11 | 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 | grade3 | natural science | earth-science | Weather and climate | What's the difference between weather and climate? | 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 text carefully.
Where Nicole lives, winter is the rainiest season of the year.
This passage tells you about the usual precipitation where Nicole lives. It does not describe what the weather is like on a particular day. So, this passage describes the climate. |
Is the helium in balloons a solid, a liquid, or a gas? | [
"a gas",
"a liquid",
"a solid"
] | 00 | closed choice | grade4 | natural science | physics | States of matter | Identify and sort solids, liquids, and gases | Solid, liquid, and gas 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 definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | The helium in balloons is a gas. A gas expands to fill a space.
The helium in balloons expands to fill all the space inside the balloons. If a balloon pops, the helium will expand to fill a much larger space. | ||
Not supported with pagination yet | Assume all other forces on Kimi are balanced. Which statement describes the forces on Kimi? | [
"The forces are unbalanced, so there is a net force on Kimi.",
"The forces are balanced, so there is no net force on Kimi."
] | 00 | Kimi is sitting on a roller coaster cart as it reaches the bottom of a big loop. Earth's gravity is pulling down on Kimi with a force of 600N. The seat of the cart is pushing up on Kimi with a force of 1,200N. | closed choice | grade7 | natural science | physics | Velocity, acceleration, and forces | Balanced and unbalanced forces | A force is a push or a pull that acts on an object. Every force has a direction and a magnitude, or strength. If two forces act on an object in opposite directions, the forces are called opposing forces.
When opposing forces have the same magnitude, they are balanced. If all the forces on an object are balanced, there ... | To determine if there is a net force on Kimi, look at the forces:
Earth's gravity is pulling Kimi down with a force of 600 N.
The seat of the cart is pushing Kimi up with a force of 1,200 N.
The forces are in opposite directions, and the forces have different magnitudes: 600 N and 1,200 N. This means that the forces ar... |
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 2.",
"The magnitude of the magnetic force is greater in Pair 1.",
"The magnitude of the magnetic force is the same in both pairs."
] | 11 | 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,... | 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.
Magnet sizes affect the magnitude of the magnetic force. Imagine magnets that are the same shape and made of the ... | |
What is the capital of Texas? | [
"Dallas",
"Austin",
"Houston",
"Jefferson City"
] | 11 | closed choice | grade3 | social science | geography | State capitals | Identify state capitals of the Southeast | Austin is the capital of Texas. | |||
Select the mammal below. | [
"rabbit",
"red-eyed tree frog"
] | 00 | Mammals have hair or fur and feed their young milk. A kangaroo is an example of a mammal. | 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. | A red-eyed tree frog is an amphibian. It has moist skin and begins its life in water.
A rabbit is a mammal. It has fur and feeds its young milk. | |
Does this passage describe the weather or the climate? | [
"weather",
"climate"
] | 00 | Figure: Croatia.
It was clear and sunny yesterday on the Croatian coast.
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 | grade4 | 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.
It was clear and sunny yesterday on the Croatian coast.
This passage tells you about yesterday's cloud cover on the coast of Croatia. This passage describes the atmosphere at a certain place and time. So, this passage describes the weather. | |
Not supported with pagination yet | What do these two changes have in common?
baking cookies
rust forming on a metal gate | [
"Both are caused by cooling.",
"Both are caused by heating.",
"Both are only physical changes.",
"Both are chemical changes."
] | 33 | closed choice | grade3 | natural science | chemistry | Physical and chemical change | Compare physical and chemical changes | Chemical changes and physical changes are two common ways matter can change.
In a chemical change, the type of matter changes. The types of matter before and after a chemical change are always different.
Some chemical changes are caused by heating or cooling. For example, burning a piece of paper is a chemical change c... | Step 1: Think about each change.
Baking cookies is a chemical change. Cookies are made from cookie dough. Baking turns the cookie dough into cookies. The cookies are a different type of matter than the dough.
Rust forming on a metal gate is a chemical change. As the gate rusts, the metal turns into a different type of ... | |
Not supported with pagination yet | Which logical fallacy is used in the text?
I don't give tests to my students because good students will study the material regardless, and bad students won't study the material even for a test. | [
"false causation: the assumption that because two things happened together, one caused the other",
"false dichotomy: an argument that presents only two choices when more options exist",
"guilt by association: a negative association intended to discredit someone or something"
] | 11 | closed choice | grade11 | language science | writing-strategies | Developing and supporting arguments | Classify logical fallacies | A strong argument uses valid reasoning and logic in support of a claim. When an argument or claim introduces irrelevant information or misrepresents the issues at hand, it may be committing a logical fallacy. Logical fallacies can hurt a writer's credibility and can lead readers to draw false conclusions.
A logical fal... | The text argues that there are two types of students: good students who will study without the incentive of a test, and bad students who won't study even with the incentive of the test. However, this argument artificially restricts the types of students to just two extremes. For example, there may be some students who ... | |
Which state is highlighted? | [
"Ohio",
"Indiana",
"Michigan",
"Iowa"
] | 00 | closed choice | grade5 | social science | geography | States | Identify states of the Midwest | This state is Ohio. | |||
Not supported with pagination yet | Complete the statement. Assume that the water balloon's mass did not change.
The gravitational potential energy stored between the water balloon and Earth () as the water balloon fell toward Dale. | [
"decreased",
"stayed the same",
"increased"
] | 00 | Read the text about an object in motion.
Kimi dropped a water balloon off a balcony. The water balloon fell toward her friend Dale, who was standing below the balcony. | closed choice | grade6 | natural science | physics | Kinetic and potential energy | Identify changes in gravitational potential energy | Gravitational potential energy is stored between any two objects. So, for every object on or near Earth, there is gravitational potential energy stored between the object and Earth.
The amount of gravitational potential energy stored between an object and Earth depends on the mass of the object. The amount of gravitati... | Think about how the distance between the water balloon and the center of Earth changed.
Dale was lower than the balcony. As the water balloon fell toward Dale, the distance between the water balloon and the center of Earth decreased. So, the gravitational potential energy stored between the water balloon and Earth decr... |
Not supported with pagination yet | Which type of sentence is this?
Joel took several incredible panoramic photographs of the sweeping view from the top of Table Mountain. | [
"simple",
"compound",
"complex",
"compound-complex"
] | 00 | closed choice | grade8 | language science | grammar | Phrases and clauses | Is the sentence simple, compound, complex, or compound-complex? | A clause is a group of words that contains both a subject and a predicate.
An independent clause is a complete thought that can stand alone as a sentence. A dependent clause (or subordinate clause) is not a complete thought and cannot stand alone as a sentence.
the oranges on our tree are ripe
The clause can stand alon... | The sentence is simple. It is a single independent clause.
Joel took several incredible panoramic photographs of the sweeping view from the top of Table Mountain. | |
Is chocolate syrup a solid, a liquid, or a gas? | [
"a gas",
"a liquid",
"a solid"
] | 11 | closed choice | grade3 | natural science | physics | States of matter | Classify matter as solid, liquid, or gas | Solid, liquid, and gas 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 definite volume and a definite shape. So, a solid has a size and shape of its own.
Some solids can be easily folded, bent, or broken. A piece of paper is a... | Chocolate syrup is a liquid. A liquid takes the shape of any container it is in.
If you pour chocolate syrup into a container, the chocolate syrup will take the shape of that container. But the chocolate syrup will still take up the same amount of space. | ||
Which country is highlighted? | [
"Antigua and Barbuda",
"Saint Kitts and Nevis",
"Grenada",
"Saint Lucia"
] | 11 | closed choice | grade7 | social science | geography | The Americas: geography | Identify and select countries of the Caribbean | This country is Saint Kitts and Nevis. | |||
Which continent is highlighted? | [
"North America",
"South America",
"Antarctica",
"Australia"
] | 00 | closed choice | grade3 | social science | geography | Geography | Identify oceans and continents | A continent is one of the seven largest areas of land on earth. | This continent is North America. | ||
Which continent is highlighted? | [
"Africa",
"South America",
"North America",
"Asia"
] | 11 | 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 South America. | ||
Not supported with pagination yet | Which word would you find on a dictionary page with the following guide words?
pad - poison | [
"president",
"peach"
] | 11 | closed choice | grade2 | 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 peach is between the guide words pad - poison, it would be found on that page. | |
Which of these states is farthest west? | [
"Alabama",
"Illinois",
"South Carolina",
"Connecticut"
] | 11 | closed choice | grade3 | 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 west arrow is pointing. Illinois is farthest west. | ||
Which continent is highlighted? | [
"Asia",
"Europe",
"Australia",
"North America"
] | 11 | 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 Europe. | ||
What is the direction of this push? | [
"away from the bulldozer",
"toward the bulldozer"
] | 00 | A bulldozer clears a path for a new road. A force from the bulldozer pushes loose dirt out of the way. | closed choice | grade4 | natural science | physics | Force and motion | Identify directions of forces | A force is a push or a pull that one object applies to another. Every force has a direction.
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 bulldozer pushes the loose dirt. The direction of the push is away from the bulldozer. | |
Not supported with pagination yet | Which is a complete sentence? | [
"Amy is from Greenwood now she lives in Wildgrove.",
"This book explains the difference between cattle and buffalo."
] | 11 | closed choice | grade3 | language science | writing-strategies | Sentences, fragments, and run-ons | Is it a complete sentence 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 run-on sentence is made up of two sentences that are joined without end punctuation or with just a comma.
I knocked on the door it opened.
It started raining, we ran inside.
To fix a run-on ... | This book explains the difference between cattle and buffalo is a complete sentence. The subject is this book, and the verb is explains. |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.