Practice working through addition and subtraction problems using the number line. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.

The purpose of this task is to promote certain addition strategies that will help students learn to fluently add and subtract within 20. Students will use a number line or magnetic cubes to solve addition problems. Students will be asked...

This WebMath site shows how to add, subtract, multiply and divide through a step by step examples. The user simple selects the operation and types in two numbers, and the computer solves the problem through a step by step process. Also...

In this lesson plan, 7th graders explore the differences and distances using a number line and adding and subtracting rational numbers.

[Free Registration/Login may be required to access all resource tools.] Find the difference of integers with different signs.