## Lesson: Fact Families

Developing the Concept

In this lesson, students explore fact families that use two numbers.

**Materials:** transparency of multiplication table (use the table from Learning Tool 14 or 15 in *Learning Tools Folder*) and overhead projector for demonstration; 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 what a fact family is and how to use a multiplication table to multiply and divide.

**Wrap-Up and Assessment Hints**

Give students a set of two or three numbers and have them use a multiplication table to find the fact family. When they are finished, have them explain the relationships between the number sentences.