Roller Coaster Challenge Subjects and yellow

and yellow

full-color idea booklet with build-out instructions

A bright LED with easy push-button action lights up details for even more discoveries

Cash Register for Kids: Working solar-powered calculator and pretend cash register

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Roller Coaster Challenge Subjects and yellowRoller Coaster Challenge combines logic puzzles with hands on building. Select a challenge card, arrange the starter pieces, then use remaining components to construct a working roller coaster that meets the card's conditions. Watch your creation come to life as a real coaster car races down the track through dips, curves, and loops. This ThinkFun STEM toy features 60 challenges ranging from beginner to expert, making it ideal for kids who love