Elmo Floats! Sink or Float Experiment

Thus far, one of our favorite STEM activities from Sesame Street's Little Discoverers has been the Sink or Float experiment.  Using aluminum foil, a small storage container, ordinary tap water, and lightweight objects we were able to explore buoyancy and engineering concepts.  First we constructed boats out of the foil.  Next, we tested how many pennies the boats were able to hold.  Finally, after we tried our own boat creations, we attempted the better boat design from the  Rocco's boat video.

Check out our boat!  Elmo floats!

A better boat with foil and pencils

P.S.,

The boys were entranced with the Sink or Float Interactive Game