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Topic – Levers

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Read the Following Selection

Read about levers, or click on the play button below to listen aloud.

Levers

A lever is a simple machine. It moves a load. A load is the thing being moved. A lever is a bar. It balances on a support, or fulcrum. Moving the support changes how much effort is needed.

Push down on the lever to lift the rock up.

Sometimes the support is in the middle of the lever. A see-saw in the park is a lever. The support on a see-saw is in the middle.

Sometimes the support is close to one end. A wheelbarrow is this type of lever. The wheel is the support. You pull up on the handles of a wheelbarrow. Moving a heavy load is easier in a wheelbarrow.

Did You Know?

Hockey sticks and baseball bats are levers. Your hands are the support for both of these levers.


Now, show what you know!

Complete some questions about the reading selection by clicking “Begin Questions” below.