Lesson 1 Make 2 Parts

    • Let’s break numbers up into parts.

Warm-up Notice and Wonder: 2 Pictures

What do you notice?
What do you wonder?

Squares, 5, turned sideways.
Squares turned sideways. Two groups. First group, 3. Second group, 2.

Activity 1 6 Connecting Cubes

You have 6 cubes. Put some of the cubes in your hand and some on your desk

Activity 2 Diego’s and Lin’s Connecting Cubes

Diego’s cubes

Connecting cubes. 3 in hand, 1 on desk.

Lin’s cubes

Connecting cubes. 2 in hand, 2 on the desk.

Activity 3 Introduce Check It Off, Add Within 10

Choose a center.

Check it Off

Center. Check It Off.

Bingo

Center. Bingo.

Find the Value of
Expressions

Center activity. Find the Value of Expressions.

Shake and Spill

Center. Shake and Spill.

Practice Problem

Problem 1

  1. 1 connecting cube tower. Blue, 3. 

    How can you break apart 3 connecting cubes into 2 parts?
    Show your thinking using drawings, numbers, words, or objects.

  2. 1 connecting cube tower. Blue, 5. 

    How can you break apart 5 connecting cubes into 2 parts?
    Show your thinking using drawings, numbers, words, or objects.