Grade
1

Which One Doesn’t Belong? Our Favorite Shapes

Look at this set of four pictures. Decide which one doesn’t belong with the other three.
Use math words to describe your thinking. There are many ways to think about each one!

Everyone has voted for their favorite shape! A. Circle gets 2 votes. Square gets 6 votes. Triangle gets 5 votes. B. Circle gets 12 votes. Square gets 6 votes. C. Circle gets 7 votes. Square gets 5 votes. Triangle gets 6 votes. D. Circle gets 6 votes. Square gets 6 votes. Triangle gets 6 votes.

Challenge

Find reasons why each of the pictures might not belong with the other three.

Share

Explain your thinking to someone else. Do they have different reasons why one doesn't belong?

Printable Version

Google doc for printing and copying

Seesaw Version

Activity for the Seesaw platform

Reference for Educators

Sample problems and solutions