HOW IT WORKS?
Hit the rubber membrane with your hand. How do the metal plates, which you can see in front of the cannon, react? Now stand in front of the cannon and let another person hit the drum. The cannon’s projectile in this case will not be cannonball, but air that is launched because of pressure.
HOW IT INFLUENCES CHILD’S DEVELOPMENT?
The practical discovery of laws of physics by combining them with fun is the quickest way to acquire knowledge by children.