Lesson 9 Expressions and Equations
Let’s show numbers 11–19 in different ways.
Warm-up Choral Count: Recording to 19
What patterns do you see?
Activity 1 Organize Expressions and Numbers
Work with your group to organize the cards in a way that makes sense to you.
Activity 2 Equations and 10-frames
Draw a line from each equation to the dots it matches.
Activity 3 Introduce Make or Break Apart Numbers, Numbers 11–19
Choose a center.
Bingo
Number Race
Grab and Count
Make or Break Apart Numbers
Tower Build
Practice Problem
Problem 1
Choose an expression that matches the dots.
Explain how the expression matches the dots.