This introductory activity gives students the challenge of building a LEGO boat (with limited pieces) that floats and holds the most weight afloat. The students will begin to see how buoyancy works and gain familiarity with putting LEGO bricks in water.

In this underwater activity students build a boat with two motors and touch sensors that they must navigate through a small course.

NOTE: The RCX cannot be submerged in the water.
Propellers can be bought at http://www.hobby-lobby.com/boatprop.htm
3/16" Drive dog props ...