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simple machines

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Lifter: What Is a First-Class Lever, and What Is The Advantage of Using One?

In this free science fair project idea, we use a broom, chair and table to construct a first-class lever, which can move a table.

Combined: What is a Compound Machine?

In this free science fair project idea, we construct gears to turn a simple machine into a more complex compound machine.

Force and the Fulcrum

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

A Single Movable Pulley and Mechanical Advantage

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

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