Which One Doesn't Belong? Hello, Butterflies

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 blue 2 + orange 3. B. shows orange 6 minus blue 1. Five orange butterflies are shown and 1 blue butterfly is flying out of the picture. C. shows blue 5 + orange 0. Five blue butterflies are shown. D. shows blue 3 + orange 3. Three blue butterflies and 3 orange butterflies are shown.


See if you can 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?