## Chapter 4: Using Bar Models: Addition and Subtraction

In this chapter, your child will learn to use bar models to solve addition and subtraction problems.

Some of the models they will use are:

Some of the models they will use are:

- addition models for joining sets
- subtraction models for taking away sets
- comparison models for comparing sets

**Vocabulary**

addition model

subtraction model

comparison model

join

set

take away

compare