Lesson objective: Use place value representations to show that ten tens can be thought of as a hundred.

This lesson helps to build fluency with place value concepts. Base ten blocks are used here because repeatedly building a hundred using tens helps to soldify the concept. This work develops students' understanding that ten tens can be thought of as a hundred.

Students engage in Mathematical Practice 4 (Model with mathematics) as they compose 100 by adding groups of ten.

**Key vocabulary:**

- equivalent
- group
- hundreds
- ten

**Special materials needed:**

- base ten blocks
- dice
- place value chart