Spin the propeller and watch it go! Build a racer that really moves with this interactive lesson in woodworking and physics. Construct and decorate the racer, then experiment to see what makes it go the farthest and fastest. The Propeller Racer features hammer, hardware, paint, paintbrush, stickers, precut quality wood pieces with predrilled holes, full-color step-by-step instructions for ease of assembly. Makes one propeller racer.