Klutz LEGO Gravity Drop

Future engineers design and build a chain reactions machine using LEGO technic bricks! They'll play, learn, and wow as they construct 20 different contraptions on an 18" gravity drop tower. Curious kids release a pack of 6 wood balls from the starting gate and watch them race through a maze of twists and turns, sliding down ramps, flipping spinners, and whirling down a funnel, before they finally plonk into their destined buckets. Physics is fun with this STEM kit that lets kids roll, bounce, rebound, and rebuild with LEGO!
 

From KLUTZ for ages 8+ yrs.