Dividing rational expressions using long division. [4:32]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

By watching this video lesson, you will learn how to solve a word problem that involves dividing a whole number by a unit fraction. [2:31]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

Divide two whole numbers to get a quotient with a decimal. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

Explore division by modeling problems and grouping with manipulatives. This video focuses on dividing whole numbers by unit fractions and modeling the problems with unit blocks.

Use real-life measurement problems involving cups of sugar to learn about fractions. This video focuses on the connections between numerical and visual representations of the division of fractions.

Sal uses area models to divide 268/2 and 856/8. [8:17]

Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.

This resource defines and explains the various types of alimony and what factors may determine whether it is awarded.

This site explains the difference between a primary and secondary source. It also provides students with questions to ask when gathering evidence about a primary source document.

This activity presents students with two versions of President Franklin D. Roosevelt's famous speech following the Japanese attack on Pearl Harbor-an earlier typewritten draft and his final reading copy. Students will read, analyze, and contrast these two versions to see the impact of his changes to the overall message and tone of the speech. W.11-12.9b US Doc Analysis

How can you actually bring history to life? Here are some tools from the National Archives that allow students to create their own projects using primary-source based activities that develop historical thinking skills. Special historical eras are offered as well as different types of activities. You can create your own, but must register with the National Archives site first.

In this activity, students will analyze documents that span the course of American history to see examples of 'checks and balances' between the legislative, executive, and judicial branches in action. Students will then match the documents they have examined with an appropriate description of the branches of government involved in the action.

In this activity, students will analyze documents that illustrate the relationship between the legislative, executive and judicial branches. Using the scale in Weighing the Evidence, students will decide whether the United States government more appropriately fits the concept of 'separation of powers' or 'shared powers.'

In this activity students will analyze documents that span the course of American history to determine their connection to the U.S. Constitution. Students will then make connections between the documents they have examined and the big ideas found within the Constitution.

The Supreme Court's landmark opinion overturned its earlier ruling in Plessy v. Ferguson and declared segregated schools unconstitutional.

This 1946 federal court ruling marked a victory for Mexican Americans and chipped away at the "separate but equal" doctrine, declaring segregated schools based on national origin unconstitutional.

In this video [6:54] from the American Masters film Zora Neale Hurston: Jump at the Sun explores Hurston's celebrated anthropological research of rural Southern Black culture in the 1920s. Using video, discussion questions and associated activities, students will learn about Southern Black culture and New Deal programs like the Works Progress Administration.

The Dust Bowl and resulting western migration that occurred in the 1930s is explored in this video [5:44] segment from the American Masters film Dorothea Lange: Grab a Hunk of Lightning. The agricultural devastation and ensuing migration is documented through the eyes and photographs of documentary photographer Dorothea Lange as she captures the influx on film. The segment discusses the causes and consequences of the Dust Bowl and contrasts the migrant farmers' hopes of finding an "American Dream" in California with the distraught reality of farm life on the west coast during this time. Other related videos and teaching materials are included.

On March 11, 2018, President Donald Trump shared his school safety plan, which includes arming teachers, expanding mental health, and improving the National Instant Criminal Background System. The plan does not endorse expanding background checks. Trump backpedaled on his support for raising the minimum age to buy assault weapons, and the proposed program is being criticized for not going far enough to address the problem of gun violence. Arming teachers could make schools less safe, given accuracy problems and the potential to draw more shooters to schools. [12:42] Support materials are provided.

In this video [5:19], Panda and Donkey are excited for their sleepover, but they're not getting much sleep because of a scary monster that appears when they turn off the lights. Sometimes things look different when the lights are off, but things are the same in the light and in the dark. What do the pals do to try to scare away the scary thing? Student materials are provided; video is available in English and Spanish.

In this interactive activity, from the Web site developed for the PBS series "Building Big," think like an engineer and use your knowledge of dome design to match the right type of dome to the right location in a fictitious city.