text stringlengths 257 42.9k | id stringlengths 47 47 | metadata dict |
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Science Fair Project Encyclopedia
The chloride ion is formed when the element chlorine picks up one electron to form the anion (negatively charged ion) Cl−. The salts of hydrochloric acid HCl contain chloride ions and are also called chlorides. An example is table salt, which is sodium chloride with the chemical formul... | <urn:uuid:4e76b8fd-c479-45d7-8ee7-faf61495aecb> | {
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Evidence from caves in Siberia indicates that a global temperature increase of 1.5° Celsius may cause substantial thawing of a large tract of permanently frozen soil in Siberia. The thawing of this soil, known as permafrost, could have serious consequences for further changes in the climate.
Permafrost regions cover 24... | <urn:uuid:867e4ca7-5a93-4c6d-b021-8088aa153645> | {
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Far north within the Arctic Circle off the northern coast of Norway lies a small chain of islands known as Svalbard. These craggy islands have been scoured into shape by ice and sea. The effect of glacial activity can be seen in this image of the northern tip of the island of Spitsbergen. Here, glaciers have carved out... | <urn:uuid:16ea6476-5c8b-4b53-82e8-132f1d1b3ac1> | {
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5th Grade Oral Language Resources
Students will:• Learn about the concept of whales.
• Access prior knowledge and build background about whales.
• Explore and apply the concept of whales.
Students will:• Demonstrate an understanding of the concept of whales.
• Orally use words that describe different types of whales an... | <urn:uuid:a16eb0ef-5e43-45e5-b0fb-052d92b4dd25> | {
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A tsunami is a series of waves most commonly caused by violent movement of the sea floor. In some ways, it resembles the ripples radiating outward from the spot where stone has been thrown into the water, but a tsunami can occur on an enormous scale. Tsunamis are generated by any large, impulsive displacement of the se... | <urn:uuid:87a817df-e201-474d-b964-dcde3f8d1a17> | {
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Learn something new every day More Info... by email
A predicate is part of a sentence or clause in English and is one of two primary components that serves to effectively complete the sentence. Sentences consist of two main components: subjects and predicates. Subjects are the primary “thing” in a sentence which the re... | <urn:uuid:b6182938-d2ed-4d47-a28c-9ae9952dbc8d> | {
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Prefixes, Suffixes, Inflectional Endings, and Root Words
Spelling Words Correctly Using Prefixes This strategy will focus on the prefix "re-" to help predict the meaning of words. The same strategy can be used to introduce other common prefixes such as "dis-", "in-" and "im-".
Prefixes and Suffixes Students will create... | <urn:uuid:facadd23-cb41-43f7-ae40-908f685d2f5d> | {
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Say it with FEELING!!
Rationale: “Fluency means reading faster, smoother, more expressively, or more quietly with the goal of reading silently. Fluent reading approaches the speed of speech.” (Murray) At this development stage, fluency is a major goal of the student and the teacher. This lesson is aimed to teach and em... | <urn:uuid:6bb0bc1f-3587-407e-bca0-a705fa87ab31> | {
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What is the media? What does it do? Students examine the types and roles of the media by taking on the role of newsmaker and agenda setter.
Students will be able to:
ANTICIPATE by asking students if they’ve ever seen a television newscast. Ask students to recall any details they remember (graphics, music, story topics)... | <urn:uuid:0ed2aa07-2935-4e0f-8814-0064087833ed> | {
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You must be familiar with slope-intercept form (y = mx + b), and understand which numbers in the equation are m and b, and how to graph them. Mark b on the graph, then graph the slope (m) from that point.
Inequalities are very similar, with only a few differences:
- It's not a line of solutions as in a linear equation;... | <urn:uuid:99cd87c4-0e1d-4f9e-bac3-a2dfe605710e> | {
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Delegates (C# Programming Guide)
A delegate is a type that defines a method signature. When you instantiate a delegate, you can associate its instance with any method with a compatible signature. You can invoke (or call) the method through the delegate instance.
Delegates are used to pass methods as arguments to other ... | <urn:uuid:0d00acab-afd5-4a68-acaf-f8e47e41ba68> | {
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The people in south Asia had no warning of the next disaster rushing toward them the morning of December 26, 2004. One of the strongest earthquakes in the past 100 years had just destroyed villages on the island of Sumatra in the Indian Ocean, leaving many people injured. But the worst was yet to come—and very soon. Fo... | <urn:uuid:db2613b9-457b-405c-a9e8-cf6b3053cdc7> | {
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Simple Equations Introduction to basic algebraic equations of the form Ax=B
⇐ Use this menu to view and help create subtitles for this video in many different languages. You'll probably want to hide YouTube's captions if using these subtitles.
- Let's say we have the equation seven times x is equal to fourteen.
- Now b... | <urn:uuid:0fd4521c-d6c5-4976-a39e-6b54d6f49c8b> | {
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Plot Cartesian Coordinate Points on a Cartesian Graph
When math folks talk about using a graph, they’re usually referring to a Cartesian graph (also called the Cartesian coordinate system). The below figure shows an example of a Cartesian graph.
A Cartesian graph is really just two number lines that cross at 0. These n... | <urn:uuid:c1e14675-b4dd-4400-86a2-d7b112a80ca0> | {
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Lesson Plans for Secondary School Educators
Unit Nine: "The Quest Is Achieved"
Content Focus: The Lord of the Rings, Book Six
Thematic Focus: What Makes a Hero?
As befits its vast scope and extraordinary ambition, The Lord of the Rings boasts three major heroes Frodo, Aragorn, and Sam plus many secondary characters who... | <urn:uuid:7af404ca-9f80-49e7-bbe2-8fb45cc6b37f> | {
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The OSI (Open Systems Interconnection) model was created by the ISO to help standardize communication between computer systems. It divides communications into seven different layers, which each include multiple hardware standards, protocols, or other types of services.
The seven layers of the OSI model include:
- The P... | <urn:uuid:e9e52982-c813-439c-a5e0-27e4bd873e1f> | {
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On this day in 1784, at the Maryland State House in Annapolis, the Continental Congress ratifies the Treaty of Paris. The document, negotiated in part by future President John Adams, contained terms for ending the Revolutionary War and established the United States as a sovereign nation. The treaty outlined America's f... | <urn:uuid:36552e09-fe5f-4bef-9dfd-1854d6c21494> | {
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The process that breaks up and carries away the rocks and soils that make up the Earth’s surface is called erosion. It is caused by flowing water, waves, glaciers, and the wind, and it constantly changes the shape of the landscape. Erosion happens more quickly on bare rock, which is unprotected by soil. It often begins... | <urn:uuid:2a1f1ec2-d89c-4314-8793-def0d577120a> | {
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Removal Act of 1830
On May 26, 1830, the Indian Removal Act of 1830 was passed by the
Twenty-First Congress of the United states of America. After four months of strong debate,
Andrew Jackson signed the bill into law. Land greed was a big reason for the federal
government's position on Indian removal. This desire for I... | <urn:uuid:41b5e72b-2514-42e7-a11a-f03dff83d033> | {
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In the 1950s a mountain range was discovered beneath the ice in Antarctica. The mountains were named the Gamburtsevs. Recently, scientists used ice-penetrating radar and a network of seismometers (size-ma-me-ters) to determine the size and shape of the range. Scientists have learned that the mountains are similar in si... | <urn:uuid:b35bb68e-9555-482d-a9d7-97804d073578> | {
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Hearing When we hear, we are processing sound waves that are made up of compressions of air or water. We hear vibrations in the air as they strike a part of the ear called the eardrum and make it vibrate. These vibrations are sent through other parts of the ear and finally sent as action potentials to the brain. Sound ... | <urn:uuid:3d78a71f-ce98-4f3a-96af-5c80c2d24ece> | {
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Reading to Learn: Comprehension Strategies
Rationale: In order to gain insight while reading one must be able to comprehend. However, students often fail to comprehend (and remember) what they have read. Because of this, teachers have been given comprehension strategies that can be taught to children in order to give t... | <urn:uuid:789d8f86-efd0-46c3-8fbc-207927d4b34d> | {
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Conjunction Activities for Children
This game is great for teaching proper usage of conjunctions. Simply click on the above highlighted link and it will take you to an online crossword puzzle that your students can use. Or, if you would like to make this an in-the-class activity, simply print it off and make copies for... | <urn:uuid:e50c95cc-1336-486a-afbd-c41eae3ecbe2> | {
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The first spacecraft to globally map the Moon left lunar orbit on May 3, 1994. Clementine, a joint Department of Defense-NASA mission, had systematically mapped the Moon’s surface over 71 days, collecting almost 2 million images. For the first time, scientists could put results of the Apollo lunar sample studies into a... | <urn:uuid:4fe5b8e2-7290-471b-8acf-b124c73b69e8> | {
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The first African-American Member of Congress was elected nearly 100 years after the United States became a nation. Slavery had only been illegal for five years in the American South when Representative Joseph Rainey of South Carolina and Senator Hiram Revels of Mississippi were elected to office in 1870. In fact, the ... | <urn:uuid:f164a12e-ab7b-4389-b2b8-cf71d8af82ec> | {
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As discussed in the previous part of Lesson 3, the slope of a position vs. time graph reveals pertinent information about an object's velocity. For example, a small slope means a small velocity; a negative slope means a negative velocity; a constant slope (straight line) means a constant velocity; a changing slope (cur... | <urn:uuid:190d46fc-ec5a-4a56-bf20-de156a9a8b7e> | {
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In the last chapter, we graphed data. Now, we move to graphing equations with two variables. For simplicity, the discussion in this chapter is confined to linear equations, i.e. equations of degree 1 . Some of the general concepts carry over to more general equations, to be discussed later.
The first section explains h... | <urn:uuid:b30e9486-7bf7-482e-bcc1-ef5338d350ff> | {
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The space near black holes is one of the most extreme environments in the Universe. The bodies' strong gravity and rotation combine to create rapidly spinning disks of matter that can emit huge amounts of light at very high energies. However, the exact mechanism by which this light is produced is uncertain, largely bec... | <urn:uuid:4dae9433-ebe8-4619-93f0-131eff1d85e3> | {
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These are not simply facts to be memorized. These are complex concepts that students need to develop through engagement with the natural world, through drawing on their previous experiences and existing knowledge, and through the use of models and representations as thinking tools. Students should practice using these ... | <urn:uuid:fadc6390-0f6e-41cd-9828-b559fa891762> | {
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In late 1863, President Abraham Lincoln and the Congress began to consider the question of how the Union would be reunited if the North won the Civil War. In December President Lincoln proposed a reconstruction program that would allow Confederate states to establish new state governments after 10 percent of their male... | <urn:uuid:565f7940-3eef-44f3-92bc-f853e45123b8> | {
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The Seasonal Merry-Go-RoundThe tilt of Earth's rotational axis and the Earth's orbit around the Sun work together to create the seasons. As the Earth travels around the Sun, it remains tipped over in the same direction, with its north pole pointed towards the star Polaris. This 23.5 degree tilt of the Earth's rotationa... | <urn:uuid:780a438e-7705-49d9-b5e2-0ad96cc083c4> | {
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If students are not familiar with or have not recently practiced plotting points on the first quadrant using ordered pairs, review that concept before continuing.
Distribute the Coordinate Geometry sheet (M-5-3-3_Coordinate Geometry and KEY.docx) to each student. On a copy of the First Quadrant worksheet from Lesson 2 ... | <urn:uuid:306213f8-dc13-43ed-acd7-8e9eff54557b> | {
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Conditional statements make appearances everywhere. In mathematics or elsewhere, it doesn’t take long to run into something of the form “If P then Q.” Conditional statements are indeed important. What are also important are statements that are related to this conditional statement by changing the position of P, Q and t... | <urn:uuid:017f3d83-aeac-4e28-af5a-1be3c01c4af1> | {
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This is a free lesson from our course in Algebra I
In this lesson you learn how to solve linearinequalities and also graph them. An inequality is an algebraic expression with one of these signs:
<, >, <=, >=. For example 2x + 3y >= 5. A
solution of an inequality is a number which when substituted for the variable makes... | <urn:uuid:aa600e3b-1174-4217-89cf-8f61147cdcf8> | {
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The Norwegian Fjords are steep, ice-carved valleys that stretch from the land out into the sea. Fjords are created not solely by glacier erosion, but also by the high-pressure melt water that flows beneath the ice. Fjord valleys can be carved hundreds to thousands of meters below sea level. The Hardangerfjorden shown i... | <urn:uuid:5c3c43bf-ba8c-47a1-add1-fd5edd04f872> | {
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- To comprehend and respond to books read aloud
- To understand the concept of characters
- To respond to questions
- To use expressive language
- To recall and retell parts of a selection
- To build vocabulary
Read Corduroy by Don Freeman, or another book with interesting characters.
Tell children that people, animals... | <urn:uuid:63a7dc8f-b306-4f36-98dc-63eeb7cb632f> | {
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Solve equations that require two operations to isolate the variable.
A list of student-submitted discussion questions for Two-Step Equations and Properties of Equality.
To encourage students’ critical thinking about vocabulary concepts, to allow students to reflect on their knowledge of individual vocabulary words, and... | <urn:uuid:1520608b-d2cb-431c-b8f0-3c190ba29299> | {
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Before defining the surface area, I want to start from the bottom of this concept. Kids start to learn about points in grade five or six. Points can be compared to real numbers. For example, the dot we use to mark the period (full stop ".") is a point. A point can be represented by a capital letter. Following are two p... | <urn:uuid:113371ba-5086-4688-adbd-4967d43cb801> | {
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... |
Learning About Simple Sentences
This is an introductory lesson about simple sentences.
• to introduce the concept of simple sentences;
to review the sentence parts, subject and predicate;
to reinforce the idea that sentences make a complete thought.
You have learned that a sentence is a group of words that makes comple... | <urn:uuid:7aa8e58a-8d09-47c0-9850-f5f469d24e97> | {
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Geometry for Elementary School/Pythagorean theorem
In this chapter, we will discuss the Pythagorean theorem. It is used the find the side lengths of right triangles. It says:
- In any right triangle, the area of the square whose side is the hypotenuse (the side of a right triangle opposite the right angle) is equal to ... | <urn:uuid:884ee432-952c-45ed-9f75-3c341c5a7243> | {
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Introduction to Rational Functions - Concept
Once we have a thorough understanding of polynomials we can look at rational functions that are a quotient of two polynomials. These rational functions have certain behaviors, and students are often asked to find their limits, or to graph them. Their graphs can have differen... | <urn:uuid:e63eb18a-d588-4324-a440-b84c1f734997> | {
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Although the surface is cold, the base of an ice sheet is generally warmer due to geothermal heat. In places, melting occurs and the melt-water lubricates the ice sheet so that it flows more rapidly. This process produces fast-flowing channels in the ice sheet — these are ice streams.
The present-day polar ice sheets a... | <urn:uuid:cef22dac-20e3-409a-98b3-f2f3ab7520bd> | {
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Rationale: Children need alphabetic insight about letters and phonemes to help them with reading skills. Before children can understand that letters and phonemes match, they have to be able to hear phonemes in spoken words. This lesson will help children hear that p says /p/. They will learn to hear /p/ in spoken words... | <urn:uuid:77883ea2-e077-4704-a54f-171e160570dc> | {
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"url": "http://www.auburn.edu/academic/education/reading_genie/passages/haslamel.html",
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Students will learn how to graph motion vs time. Students will learn how to take the slope of a graph and relate it to the instantaneous velocity or acceleration for position or velocity graphs. Finally students will learn how to take the area of a velocity vs time graph in order to calculate the displacement.
Illustra... | <urn:uuid:a686f5c2-ea3e-4779-97ab-33662faf6f84> | {
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This is a drawing of a process which forms mountains on Earth.
Click on image for full size
Mountains are built through a general process called "deformation" of the crust of the Earth. Deformation is a fancy word which could also mean "folding". An example of this kind of folding comes from the process described below... | <urn:uuid:f82c143a-c60e-48df-9382-f61afd0bed05> | {
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Why did the US Congress have a problem in 1850? And why did the solution lead to the creation, 160 years ago this month, of a place called Utah?
The lands of the American Southwest – an area now covering California, Wyoming, Colorado, New Mexico, Arizona, Nevada, and Utah – were ceded to the United States following the... | <urn:uuid:238bd93e-8032-42fd-8c19-309c1f169b2a> | {
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Solon was one of the archons in ancient Athens. In 594 B.C. Solon made
several important reforms, which loosened the tension of civil war breaking
out. He also made it were the public office system was based on wealth. Thus
making it were any qualified citizen could become a public official.Solon also
published all the... | <urn:uuid:0ac409c0-aa17-435b-a64f-752c973331a4> | {
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"language_score": 0.98612... |
Algebraic concepts can evolve and continue to develop during prekindergarten through grade 2. They will be manifested through work with classification, patterns and relations, operations with whole numbers, explorations of function, and step-by-step processes. Although the concepts discussed in this Standard are algebr... | <urn:uuid:a28028aa-a1b8-404e-ae45-a6c966b32e12> | {
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"url": "http://www.fayar.net/east/teacher.web/math/Standards/document/chapter4/alg.htm",
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A < B A > B A <= B A >= B A == B A ~= B
The relational operators are <, >, <=, >=, ==, and ~=. Relational operators perform element-by-element comparisons between two arrays. They return a logical array of the same size, with elements set to logical 1 (true) where the relation is true, and elements set to logical 0 (fa... | <urn:uuid:53033633-cf29-4491-9e11-b0f4af8e5a0c> | {
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"la... |
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