We have been learning about simple machines and how they make life easier.
Just for fun we have built rube-Goldberg machines.
Rube-Goldberg machines are the opposite of simple machines.
These are complicated machines that do a simple task.
My Rube-Goldberg machine is made up of levers and 2 inclined planes. If you want to know how it works you let the marble go down the inclined plane and the marble will hit the domino and go in the cup.