E Solve & Share
| » Sort the shapes into two groups. Use
colored pencils or crayons to color each
group a different color. How did you sort
the shapes? How are the shapes in both
of your groups alike?

Dana wants to identify the favorite professional baseball team of people in her community. she stands outside a local sporting goods store and asks every other person who enters, "what is your favorite professional baseball team? " will the results of her survey be valid? explain.