Principle:

The mechanical butterfly is a very interesting kit. After assembling the product, install the battery and turn on the switch. Because the gear plate is connected to the butterfly wing plate, according to the principle of gear transmission, after electricity, the wings flap. Teaching Aid Mechanic Theory! Mechanic Engineering concepts for gears.

Instructions in English included in package.

Stem Toys are Science, Technology, Engineering, and Math based toys geared towards learning, curiosity, and education. There are a variety of different Stem Toys focusing on core disciplines in coding, engineering, chemistry, mechanical toys and more!