STEM Hand cranked butterfly student educational model diy science experiment flying butterfly handmade products children's material 


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The model utilizes the structure of gear transmission and crankshaft connecting rod. There are two gears of equal size that mesh with each other. 
When one gear is shaken, the other gear will rotate in the opposite direction. The two gears are both crankshafts connecting the connecting rods and wings. 
When the gears rotate, they will connect the connecting rods to perform reciprocating motion over and over again, driving the wings to flap up and down.


Scientific STEM Project Kit: A beautiful STEM project kit for teenagers 8 years and older. When you assembling robot, you can learn the basic principles of simple circuit, motors, mechanical and engineering, further improve kids to learn circuits and science, inspire their curiosity and creativity


HANDS-ON STEM
Great opportunity for children to get to know the world of electronic toys- In the end they really build their own robots!


Encourage Kids to develop their creativity and imagination- Teaching them problem solving, fine motor skills and independent thinking in a unique and fun way with this STEM learning toys set.


Fun in class or with family- Enriching young minds learning scientific principles, whether it's with their classmates or during family bonding time.