Show children the plastic bins labeled “Float” or “Sink” and review the “Our Ideas About Sinking and Floating” chart. Ask them to compare the objects in the bins:
- Why do you think these objects float? (children might mention something about their shape, weight, what they’re made from)
- Look at the objects that sank to the bottom. What do you think makes them sink?
- Were you surprised that some of these objects floated/sank? Why did you think they would float/sink?