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Day 4: Simple Machines

Simple machines are all around us and help make our work easier. Simple machines have always fascinated kids. They love to build them and explore them. It is more fun when you have something to lift with your pulley. We placed a couple of marbles, chickpeas and a toy car in ours.

A pulley is a simple machine that is used to lift objects. We made our pulley today. It works.

We tried an experiment to show how levers work. We experimented with how moving the fulcrum (the tension point in the middle of the plane) made lifting the book either more challenging or easier, depending on how you moved it—having the fulcrum closest to the object, lifting made it almost effortless.