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This simple demonstration shows how a screw is actually an inclined plane. You may want to do this as a demonstration for your class or have every student make their own. |

MaterialsPencil Paper Colored felt tip marker Scissors |

Procedure1. Cut a right triangle from the paper. The dimensions should be about 5 inches, by 9 inches, by 10.3 inches. 2. Use the felt tip marker to color the longest edge (10.3 inches) of the triangle. 3. Position the shortest side (5 inches) of the triangle along the side of the pencil and then evenly wrap the paper around the pencil by rolling the pencil. |