## Lesson: Prime Factorization

Introducing the Concept

By making sure your students' work is neat and orderly, they will be less likely to lose factors when constructing factor trees. Have them check their prime factorizations by multiplying the factors to see if they get the original number.

**Prerequisite Skills and Concepts:** Students will need to know and be able to use exponents. They will also find it helpful to know the rules of divisibility for 2, 3, 4, 5, 9, and 10.