Action duo learn rotatory to reciprocating motion through this kit. Both bird and bear are playing on the seesaw. As the bird moves, the bear will also move accordingly. This is because both of them are on the same leverage.
Why does the rotational power of the motor will cause the bird and the bear to move left and right? This is due to same simple mechanical trick. When you assemble the parts, you can see seesaw panel and gear cap are the key to converting rotational force to left and right motion.
And as season panel connects to both the bird and the bear, both of them move accordingly.
