# Lesson 10 Center Day 2

Let’s add and subtract.

## Warm-up Choral Count: Count by 10

What patterns do you see?

## Activity 1 Revisit What’s Behind My Back, 10 Cubes

We are going to play a game you learned in kindergarten called What’s Behind My Back. Let’s play the first round together to make sure we all remember how to play.

## Activity 2 Centers: Choice Time

Choose a center.

Five in a Row: Addition and Subtraction

Check it Off

What’s Behind My Back

Find the Pair