Lesson 21 Center Day 4

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

Warm-up Number Talk: Missing Values

Find the missing value mentally.

$4 +$ $= 5$
$5 -$ $= 4$
$6 +$ $= 8$
$8 -$ $= 6$

Activity 1 Introduce Number Puzzles, Within 10

Use your number cards to play the game. Complete a puzzle before moving to the next one. Finish as many as you can.

Activity 2 Centers: Choice Time

Choose a center.

Capture Squares

Center. Capture Squares.

Math Stories

Center. Math Stories.

What’s Behind My Back

Center. What's Behind My Back.