A wheel is a circle that rolls along the ground. An axle is a stick or rod that goes through the centre of the wheel. A lever is a bar that rests on a fulcrum to lift up a heavy load by applying pressure on one side. We had a poster for both simple machines and we had to answer the questions on the poster. We then had to make a wheel and axle. We then later in the week tried to use the lever to pick something up.
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