Lesson 3 Add 1 or 2
Let’s add 1 or 2.
Warm-up How Many Do You See: Dot Cubes
How many do you see? How do you see them?
Activity 1 Introduce Five in a Row: Addition and Subtraction, Add 1 or 2
How did you find the sum?
Activity 2 Centers: Choice Time
Choose a center.
Counting Collections
![Center. Counting Collections.](../../../../../downloads/3de1e05f--counting-collections-illustration.png)
Number Race
![Center. Number Race.](../../../../../downloads/7d4261a4--Number-Race.png)
Check it Off
![Center. Check It Off.](../../../../../downloads/35043c4d--Check-it-off.png)
Five in a Row: Addition and Subtraction
![Center activity. Five in a row.](../../../../../downloads/f291116a--1.5.B-Centers.5_in_a_row-(1).png)
Practice Problem
Problem 1
Find the value of each sum.