They learned first hand that pulleys make lifting heavy loads easier. Each child was given the opportunity to lift a heavy paint can with first 1, then 2 and then finally 4 pulleys. They all came to the conclusion that 4 pulleys was the best for lifting a heavy load!
A clothesline helped emphasize the fact that a pulley changes the direction of a force. They sent a joke across a clothesline to hear the punchline. Then, a prize was sent back to them for doing such a good job!
Levers were introduced by reading the book "Simple Machines: Levers" by David Glover. Experimentation with levers included a balancing challenge and catapults.
SoooooooMuchhhhhFunnnnn!
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