Scholastic Inc. / Scholastic Canada Ltd.
Ages 8 to 12
Build a Machine that Really Works!Perfect for any budding engineer with a sweet tooth! Make your own gumball machine with a book of step-by-step instructions, adjustable ramps, custom snaps, and bumper guides. Then, keep the ball rolling with other gumball-related science experiments using simple machines. It's a ball of fun!1/2" gumballs not included.Includes: 36-page book, Chipboard parts, Dispenser knob, Transparent acetate, Plastic fasteners