Help Santa figure out how many puzzles and books to leave for the children of this family. Once you figure it out you can check the solution.

Figure out how many gifts are in each stack using the clues that are given. The solution is available at this one page website.

Use a simple formula to help you figure out the age of the mathematician Augustus de Morgan. When done, check your results against the solution.

Keeping in mind that decimals are really fractions, this site shows you how to convert decimals and work with them in solving equations.

Use this tool to find out if expressions are equal to each other. If the pan balance levels out then the expressions are equal.

This task challenges students to demonstrate an understand of the concept of equality using scales and balance beams.

This task challenges students to use rules to calculate and compare the cost of memberships.

Solve inequalities that take two steps to solve. For example, solve 3x + 2 > 5. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this exercise, students practice identifying slope of a line. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.

Understanding properties will lay the ground-work for solving equations.

Writing expressions paves the path to writing and solving equations.

This activity focuses on strengthening student understanding of connections among graphical, tabular, and algebraic representations of simple linear functions. They enter a simple program that allows them to determine the equations for...

Gain an understanding of how to calculate the area and the perimeter by viewing examples and a video lesson. [1:13]

Practice writing basic algebraic expressions to model real-world situations. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

In this lesson, the students will learn what a ratio is and how it can be used in a comparison. In this lesson, students will also determine how to combine a sports drink in powder form and water to make enough for a whole football team....

Seventh grade young scholars have had wide-ranging experiences with fractions and operations on fractions, but ratios and rates may be new concepts for them. This activity introduces students to the idea of rates via a familiar and...

The purpose of this task is to see how well students students understand and reason with ratios. This task was adapted from problem #14 on the 2011 American Mathematics Competition (AMC) 8 Test. Aligns with 7.RP.A.3. The site provides a...

The purpose of this task is to give young scholars an opportunity to solve a multi-step ratio problem that can be approached in many ways. The site includes a task and the solution.

This lesson provides a variety of activities for the students to experience using percents. The usage of percents is presented in the context of situations that occur in a student's daily life. A kinesthetic activity is also included to...

What have students learned over the course of Unit 1? Students apply their knowledge of multiples, factors, order of operations, and equivalent expressions to review for the unit test.

Find out how the equations shift the shape of the parabola.

Sometimes it is difficult to solve an equation exactly. But an approximate answer may be good enough!

This tutorial defines and and demonstrates Pascal's triangle.

[Free Registration/Login Required] By the end of the lesson, students will apply the order of operations (PEMDAS) to help simplify complex expressions. Students will work together as a whole class and then demonstrate their knowledge...