Describes the main events of the Korean War.

Discusses the famous Supreme Court decision that ended school segregation, Brown v. Board of Education of Topeka (1954).

Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Find the slopes of lines whose equations are given in various forms. For example, find the slope of 2x+3y=5. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this exercise, students practice addition word problems within 10. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

In this exercise, students practice subtraction word problems within 10. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Practice solving word problems by adding small numbers (numbers 10 or less). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice solving word problems by subtracting small numbers (numbers 10 or less). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Identify squares, rectangles, and rhombuses. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints. CCSS.Math.Content.3.G.A.1 Understand that shapes in different categories

In this exercise, students practice performing translations on a coordinate plane. Students receive immediate feedback and have the opportunity to watch a video, get hints, or try questions repeatedly.

Use the interactive transformation tool to perform translations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice identifying symmetrical shapes. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice matching 2D nets to the 3D shapes the fold up into. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Practice solving questions about the probabilities of compound events. Includes hints.

In this set of questions, students practice identifying side-side-side similarity among triangles. Includes hints.

A set of questions on experimental and theoretical probabilities using coins and dice. Answers are accompanied by explanations.

Practice calculating the probability of a given outcome in these exercises. Includes hints.

Find the distance between points, graph points, and interpret data on coordinate planes to solve word problems. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

Try some coordinate plane word problems focusing on quadrant 1. Miss the problem, and Kahn offers some tutorials for help.

Try these multiple-choice problems practicing writing numerical inequalities.

Try some self-correcting practice two-step inequality word problems.

Explains how to use elimination to simplify and solve systems of linear equations. Includes practice problems and explanations of their solutions.

In this practice quiz, students are given a system of two equations and asked to substitute the information from one equation into the other in order to determine x and y. Includes hints.

Given an equation, students are asked to try inserting different values for the unknown and choose the correct solution. Includes hints.