Lesson 10 Center Day 2

    •  Let’s play games to practice adding and subtracting.

Warm-up Notice and Wonder: Compare the Representations

What do you notice? What do you wonder?


Base ten diagram. 6 tens, 3 crossed out, labeled 30. 10 ones, 6 crossed out. Arrow pointing from one crossed out tower of ten to a circle with 10 ones inside. 2 ones crossed out in the circle. Circle labeled 8.


Activity 1 Introduce Target Numbers: Subtract Two-digit Numbers

We are going to learn a new way to play Target Numbers. You and your partner will start with 100 and race to see who can reach a number less than 10 first.

Activity 2 Centers: Choice Time

Choose a center.

Target Numbers

Center. Target Numbers.

Capture Squares

Center. Capture Squares.

Five in a Row

Center activity. Five in a row.