An Activity for Preschoolers:

Create craft stick rafts and then test them. Will yours sink or float?

Before You Begin:

Provide enough craft sticks and glue for each child to complete a raft. You'll also want to have a water table and counters available for the second part of the activity.

Activity Goals:

To practice counting and one-to-one correspondence while making observations about sinking, floating and weight.

Furthermore:

You may turn this activity into a game by challenging students to create the raft that holds the most counters.