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Make science come in loud and clear. Pupils learn about how a speaker works by building one. The scholars first learn about electromagnetic fields by building an electromagnet. Using that knowledge, they build a crude speaker using a paper cup, wire, and a ceramic magnet.
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Concepts
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Instructional Ideas
- Bring in an old speaker to disassemble to reveal its components
- Have the class determine methods to find the strength of the homemade electromagnets
Classroom Considerations
- Requires working with electricity, which may be a safety concern
Pros
- Provides a suggestion on where to find ceramic magnets
- Includes links for further extensions
Cons
- None