Have you ever played sink or float?
This silly little game is one of my kids favorite, and they love to play it with their friends as well.
It is fun but also makes them think and learn.
Start out by sending them on a treasure hunt for little toys or odds and ends around the house that are ok to get wet.
Each child will take a turn and select an object.
Every player then makes a guess as to if it is going to sink or float.
Have them talk it over and discuss why it may sink (because it is heavy) or why it might float (because it is made out of wood)
Then put the item in a large bowl of water and see what happens…
Did it sink or float?