Lesson 18 Patterns in Addition
Let’s look for and use patterns to help us add within 20.
Warm-up How Many Do You See: More Double 10-frames
How many do you see?
How do you see them?
Activity 1 Expression Match
Take out all the expression cards that have the number 10.
Mix up the rest of the cards.
Pick a card.
Place the card under the expression with 10 that it is equal to.
Activity 2 Compare and Connect: Gallery Walk
Create a visual display that shows the expressions equal to the expression with 10 I assigned you.
Activity 3 Centers: Choice Time
Choose a center.
Shake and Spill
Select 3 expressions that have the same value as 10 + 3.