## Lesson: Adding and Subtracting With Negative Integers

Introducing the Concept

Your students have worked with adding and subtracting integers on a number line, but it is a good idea to start by reviewing the basic skills of adding and subtracting on a number line. This will provide a visual model of what they are doing and should help them understand and remember the rules.

**Materials:** a large number line on the chalkboard or on an overhead transparency

**Prerequisite Skills and Concepts:** Students should know how to add and subtract positive numbers using a number line.

Use the large number line you made or the one you made on the overhead transparency.