Lesson 17 Make and Break Apart 10
Let’s look for groups that make 10.
Warm-up Estimation Exploration: 5 and 5 makes 10
How many dots are there?
Record an estimate that is:
too low
about right
too high
How many dots are there?
Record an estimate that is:
too low
about right
too high
Activity 1 10 Beads
We are going to make a tool that will help us work with the number 10.
Activity 2 Make and Break Apart 10
Problem 1
Use your beads to show each equation. When your partner shows you their beads, tell them the equation to make 10 and draw a picture to show what the beads look like.
Problem 2
Fill in each equation to match the pictures of beads. You can use your bead tool if it’s helpful.
Activity 3 Centers: Choice Time
Choose a center.
Shake and Spill
![Center. Shake and Spill.](../../../../../downloads/8d8b2f09--cup-counters.png)
Number Race
![Center. Number Race.](../../../../../downloads/7d4261a4--Number-Race.png)
Grab and Count
![Center. Grab and Count.](../../../../../downloads/831f4860--GrabAndCount.png)
What’s Behind My Back?
![Center. What's Behind My Back.](../../../../../downloads/04de3281--2.1.A-Student-Pages.ConnectingTowers-(1).png)
Pattern Blocks