How Things Work
How Submarines Work - Ages 3-6

Soleil Kohl
Submarines float above water and then sink deep into the ocean. How are they able to change how much they sink or float? We're going to explore submarines, and then create our own submarine experiment!
Materials Needed
Squeezable, clear plastic water bottle (or other container with a screw-on lid)
Tall cup of water
Play dough, modeling clay, or putty
Ballpoint pen cap