Which one doesn’t belong?

Draw your fourth shape.

For each shape, discuss one reason why it does not belong.

Draw your third and fourth shapes.

For each shape, discuss one reason why it does not belong.

Create your own Which One Doesn’t Belong about any mathematical idea you want others to notice.

As mathematicians, it is important to justify our thinking and listen to the reasoning of others. Describe a time when you learned something new or thought differently about something based on what someone else in the class said today.