This learning video is designed to develop critical thinking in students by encouraging them to work from basic principles to solve a puzzling mathematics problem that contains uncertainty. Materials for in-class activities include: a yard stick, a meter stick or a straight branch of a tree; a saw or equivalent to cut the stick; and a blackboard or equivalent. In this video lesson, during in-class sessions between video segments, students will learn among other things: 1) how to generate random numbers; 2) how to deal with probability; and 3) how to construct and draw portions of the X-Y plane that satisfy linear inequalities.

This article provides nine research-based elements of vocabulary instruction that can guide teachers thinking about the way they approach word study in their curriculum.

In this activity, learners observe what happens when they give a light source like a neon glow lamp a "Bronx Cheer." The lights appear to wiggle back and forth and flicker when learners blow air through their lips. However, learners will discover that the only thing vibrating is themselves. Use this activity to explore different forms of light as well as visual perception.

Browder v. Gayle (1956) was a District Court case that legally ended segregation on public buses in Montgomery, Alabama. The U.S. Supreme Court declined to review the case, allowing the District Court's judgment to stand.

This problem promotes logical thinking and introduces learners to the trial and error (guess and check) problem solving strategy, especially with the interactive provided. In this problem children need to understand the difference between having a certain number of brothers and the number of boys in a family to answer the question, "How many children are there in the Brown family?" The Teachers' Notes page offers suggestions for implementation, discussion questions, ideas for extension and support, and a link to a down loadable worksheet for students to table their trials.

Reading Robert Browning's poem "My Last Duchess," students will explore the use of dramatic monologue as a poetic form, where the speaker often reveals far more than intended.

This lesson explores the landmark U.S. Supreme Court decision in Brown v. Board of Education, which led to the end of legal school segregation and other forms of legal segregation throughout the United States. Access to this resource requires a free educator login.

Case background and primary source documents concerning the Supreme Court case of Brown v. Board of Education. Dealing with the principle of Equal Protection, this lesson asks students to assess the role played by the Court as the protector of individual rights against the tyranny of the majority.

The Court decided that state laws requiring separate but equal schools violated the Equal Protection Clause of the 14th Amendment. This resource includes teacher materials, guides, and activities for teaching about this Supreme Court case.

In Brown v. Mississippi (1936), the Supreme Court unanimously ruled that, under the due process clause of the Fourteenth Amendment, forced confessions cannot be admitted into evidence. Brown v. Mississippi marked the first time the Supreme Court reversed a state trial court conviction on the basis that the defendants’ confessions were coerced.

A reading which reviews the context and history of the landmark Supreme Court case regarding the unequal nature of racial segregation in public schools.

To manage their businesses successfully, farmers and food production companies need to know what crops are in the ground and how well they are growing. A pair of easy-to-use online mapping tools provides this information for growing seasons in the past and present.

In this amazing video, visit one of Utah's most amazing sites, Bryce Canyon.

Ask the students general questions about inventions. Present the book "Pop! The Invention of Bubble Gum." Show the students other books about bubble gum. Generate enthusiasm for creating your own inventions. Make bubble gum from scratch using bubble gum making kit.

In this activity, learners observe as soap bubbles float on a cushion of carbon dioxide gas. Learners blow bubbles into an aquarium filled with a slab of dry ice. Learners will be amazed as the bubbles hover on the denser layer of carbon dioxide gas, then begin to expand and sink before freezing on the dry ice. Use this activity to discuss sublimation, density, and osmosis as well as principles of buoyancy, semipermeability, and interference.

Create giant bubbles! Bubbles are fascinating. What gives them their shape? What makes them break or last? What causes the colors and patterns in the soap film, and why do they change?

In this video segment adapted from A Science Odyssey, learn about bubonic plague and how city officials in San Francisco tried to contain its spread in the early 1900s..

A new instructional model, called Argument-Driven Inquiry (ADI), is introduced to elementary teachers in this article. The author shows how school librarians and classroom teachers can collaborate to help students construct and communicate evidence, or arguments. Evidence buckets, a collaborative activity, and related online resources are presented. The article appears in the free online magazine Beyond Weather and the Water Cycle, which is structured around the seven essential principles of climate literacy.

Do campaign donations qualify as speech? In Buckley v. Valeo (1976) the United States Supreme Court held that several key provisions of the Federal Election Campaign Act were unconstitutional. The decision became known for tying campaign donations and expenditures to Freedom of Speech under the First Amendment of the U.S. Constitution.