1. Shifting Gears Connecticut Invention Convention
Shifting Gears
Connecticut Invention Convention

2. Parts of a Toy: Gears

3. Parts of a Toy: Wheels

4. Parts of a Toy: Screws

5. Preparing the Gears
Cut out the gears from the pieces of paper passed out by your teacher
Color the gears
Each student should have several gears of multiple sizes

6. 3-D Gear Models

7. Printouts

8. Moving the Gears
Put a point on the gear and turn the gear all the way until the point is in the same place that it began.
Has anything about the gear changed?
Put two gears together of the same size.
When one moves, does the other move in the same direction? Do they move the same distance?
Put two gears together of different sizes.

9. Exploration https://woodgears.ca/gear_cutting/template.html
Play with the gears.
Try to understand how they move together.