Shifting Gears Connecticut Invention Convention http://upload.wikimedia.org/wikipedia/commons/thumb/1/15/2010-10-30_Geeste%2C_Moormuseum_032_%285207510676%29.jpg/800px-2010-10-30_Geeste%2C_Moormuseum_032_%285207510676%29.jpg Shifting Gears Connecticut Invention Convention www.ctinventionconvention.org

Parts of a Toy: Gears http://upload.wikimedia.org/wikipedia/commons/4/42/Clockworksapprentice.jpg

Parts of a Toy: Wheels http://upload.wikimedia.org/wikipedia/commons/thumb/6/67/Wheel_chair.jpg/448px-Wheel_chair.jpg

Parts of a Toy: Screws http://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Ruuvit.jpg/800px-Ruuvit.jpg

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

3-D Gear Models

Printouts

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.

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