## Lesson: Fact Families

Introducing the Concept

Knowing how to use a multiplication table to multiply and divide will help students explore fact families.

**Materials:** multiplication table for each student

**Preparation:** Students can use the multiplication tables they made earlier, make new tables, or use Learning Tool 14 or 15 in the *Learning Tools Folder.*

**Prerequisite Skills and Background:** Students should know how to use a multiplication table to multiply and divide.