# 1.2 Prime Factorization

Prime Factorization is the second section of Chapter 1: Number Relationships. In this section, students learn how to use factor trees to decompose whole numbers into their prime factors.

## Introduction to Prime Factorization

First, we defined *prime factorization* and looked at some examples. We actually used linking cubes to do this. For an example, see the activity on Factor Blocks.

## First Examples

Next, we tackled some bigger numbers, that couldn't be calculated using linking cubes.

## Last Example

Here, we wanted to find all of the factors of 1050. We found out we could sort of do it using the prime factors. It was quite a bit faster than the previous method we had, but there were more opportunities to make mistakes.

## Support Questions

The support questions we chose for this section were: #5, 7, 8, 9, 10.