What Is It
The chassis is a modular car that consists of two gear motors to drive the wheels. By snapping it to other Grove Zero modules, you can get a compact and cool robot car.
How It Works
The two gear motors on the chassis drive each of the wheels to make car move forward, backward or turn.
By controlling the electric signals sent to the motors, we can control the speed and direction of the car, so that the car is able to change its movement.
Real World Analogy
Codecraft
You can find blocks that control the chassis in the tab Motion in Codecraft.