Learning Exercise
What Class Are You In ? (Levers)
Students will again learn about levers with human examples. Students will also watch a video on the Skeletal System (Schlessinger Science Library)
Course: 7th grade Life Science
- Material:
- Skeletal System
- Date last modified:
- December 11, 2007
- Created by:
- sepalika wickremasinghe
- License:
-
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Excellent graphics of the skeletal system , and individual bones. see more
Exercise
What Class Are You In?
Your skeletal and muscular systems work together to move your body parts. Together the two systems work like a simple machine called a lever. A lever is defined as a bar that is used to lift weight. The bar of the lever moves on a fixed point called the fulcrum. There are three classes of levers.
Students will now watch the video and answer the following:
1. First Class Lever
Draw and explain how a first class lever works. Give a human example. 2. Second Class Lever
Draw and explain a second class lever. Give a human example. 3. Third Class Lever
Draw and explain how a third class lver works, give a human example.
Your skeletal and muscular systems work together to move your body parts. Together the two systems work like a simple machine called a lever. A lever is defined as a bar that is used to lift weight. The bar of the lever moves on a fixed point called the fulcrum. There are three classes of levers.
Students will now watch the video and answer the following:
1. First Class Lever
Draw and explain how a first class lever works. Give a human example. 2. Second Class Lever
Draw and explain a second class lever. Give a human example. 3. Third Class Lever
Draw and explain how a third class lver works, give a human example.