Levers
Use a lever to lift a pig, turkey, or sheep. A strongman provides up to 1000 newtons of effort. The fulcrum, strongman, and animals can be moved to any position to create first-, second-, or third-class levers.
LESSON MATERIALS:
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Teacher Guide
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Vocabulary Sheet
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Student Exploration Sheet
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Exploration Sheet Answer Key
Answer Key for Subscribers Only
LEARNING OBJECTIVES:
- Identify the parts of a lever.
- Discover that a lever can be used to lift heavy objects using less force.
- Describe the relationship between the applied force (effort) needed to lift a load and the distance from the fulcrum to the applied force.
- Calculate mechanical advantage.
- Diagram a first, second, and third-class lever.
VOCABULARY:
- effort, first-class lever, fulcrum, lever, load, mechanical advantage, second-class lever, third-class lever
User Recommendations (4):
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Love, love, love all the simple machine gizmos. Wish I could do hands-on with kids, but it never works as well as "mouse on" for this skill.
By: Tobi Layton (Missouri) | Recommended 119 days ago
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BEAST14
By: Donna Amland (Texas) | Recommended 290 days ago
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You should do this Gizmo. This one is funny!
By: Sandra Witt (Florida) | Recommended 297 days ago
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A-W-E-S-O-M-E! Students who did not understand these concepts before are having "Aha!" moments! KUDOS!
By: Ms. Parker (New York) | Recommended 301 days ago
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