Which One Doesn’t Belong? Odd Shape Out

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!

A. shows a yellow circle. B. shows yellow square. It's made from 2 equal rectangles. C. shows a yellow cube. D. shows a blue triangle. Each side is a different length.


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


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