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!
- - 26 custom chipboard pieces
- - Spinner knob
- - Plastic window
- - 11 custom plastic parts
- - 27 snaps
- - 36-page book with simple machines,
- experiments, instructions, and more!