Lesson 5 Circles and Triangles
Let’s learn the names of some shapes.
Warm-up Which One Doesn’t Belong: Shape Attributes
Which one doesn’t belong?
Activity 1 Color Circles and Triangles
Problem 1
Problem 2
Activity 2 Triangle Sort
Let’s put the shapes into 2 groups.
Triangle
Not a Triangle
Activity 3 Introduce Counting Collections, Up To 20
Choose a center.
Counting Collections
![Center. Counting Collections.](../../../../../downloads/3de1e05f--counting-collections-illustration.png)
Which One
![](../../../../../downloads/6c48e03f--GuessWho.png)
Picture Books
![Center. Picture books.](../../../../../downloads/b540989f--K.1.D-Beta-Student-Workbooks.Books.png)
Bingo
Shake and Spill
![Center activity, shake and spill.](../../../../../downloads/e17c01a3--cup-counters-(2).png)
Practice Problem
Problem 1
Color in the triangles.
Cross out the shapes that are not triangles.