Class members build a machine to demonstrate Lenz's law and help this scientific principle come to life. After building a ring fling machine, instructions for properly operating the machine and a few thought-provoking questions lead to immediate classroom application.

Concepts

induction, electromagnetic force

Show More Show Less

Additional Tags

science

Show More Show Less

Instructional Ideas

• Test additional metal rings, predicting their results before using the machine

Classroom Considerations

• Requires a considerable amount of time to build the machine before students can use it
• Relies on prior knowledge of Faraday's law of induction, Lenz's law, and Newton's third law

Pros

• Offers excellent step-by-step directions, including when to take a snack break while building the machine
• Provides photos of many of the steps to help builders stay on track

Cons

• None

Common Core

RST.9-10.3 RST.11-12.3