Wheels and Axles

What You'll Learn

Friction helps you walk. Without friction, your feet would slip on the floor!

Step 1 — Read

Talk about what you already know about Forces.

Step 2 — Do

Build a simple lever with a ruler and pencil. Try lifting objects on one end by pushing the other.

Step 3 — Observe

Compare what happened to what you predicted.

Step 4 — Record

Tell the class one thing you learned today.

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What is a force?