Build a mechanical butterfly that actually flutters its wings! This DIY kit introduces kids to the world of gears through a captivating build — as they turn the gears, they watch the butterfly's wings come to life, learning cause and effect in a hands-on, memorable way.
Build a gear-powered mechanical butterfly from scratch
Watch the wings flutter as you turn the gears — cause and effect in action
Introduces gear mechanics through creative, imaginative play
