You Will Need:
Objects to experiment with (rocks, feathers, paper, bread, plastic toys, etc.) and a clear container of water large enough for the objects to fit in
Set up one or more clear bins filled with water. Help your child find items to experiments with. Talk about what “predict” means and ask your child to predict which items will sink and which items will float. Have him put the items in the water and observe. Ask things like, “What do you see happening?” and “Why do you think that’s happening?”
Find some items that have surprising results, like a jar with an airtight lid on – it seems like it should sink, but it floats.