This is a lab box that shows mechanical transmissions, where children see basic mechanical elements as toys and introduce them into game experiments. The game contains the mechanical components required for the experiment and 22 basic mechanical principles experiments. In the experiment, the children can insert the fixed rod, turn the handle, transmit the rotary motion, change the direction of rotation or make a sound. These are the most basic mechanical transmission principles. It is these simple principles and mechanisms that have helped people alleviate a lot of work for hundreds of years.
