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Tricky 2-D rectangular and mind-boggling 3-D pyramid puzzles at multiple levels of difficulty
a gingerbread man
75" x 3" (Includes USB cord or operation from 3 C batteries
he's a tiny
Solar Flower Ruby Ripple Thames & Kosmos wooden puzzle Tricky 2-D rectangular and mind-bogglingBuild this beautiful kinetic sculpture, a motorized flower model with moving petals, powered by a solar panel. Learn about mechanical systems like motors and planetary gears, and about how solar cells generate electricity to power the flower. An ingenious design allows all petals to rotate synchronously, driven by a single motor, resulting in a mesmerizing optical illusion effect. This flower will never wilt, and you will never run out of batteries;
