Flip Two Cards, Weigh the Objects

Create cards with words or pictures of classroom items.

• Optional: Have precut pieces of paper and have your students create the playing cards after collecting classroom or outdoor materials. 

Either as a class or in a small group, set out cards face down and have a student volunteer flip over two cards.

• Make an hypothesis on which is heavier. 

Have the student then place the items that correspond to the images on the cards onto a balance scale.

Make an observation on whether your hypothesis was correct.