To go along with our study of The Way Things Work, I picked up a few new K'Nex kits. You should have see The Professor's face when we opened the box! He was THRILLED!!!
He's already built several things...
He even added a motor! The instructions didn't include this. It came from another set he has.
yet another motor added... :)
He's also made an egg beater and a stationary bicycle!