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How can companies make cheap hair dryers? The second of two videos on hair dryers looks at what's inside a hair dryer. The video also shows and explains some cost-cutting measures that companies take to keep costs competitive.
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Instructional Ideas
- Have learners create a diagram for how a hair dryer works
Classroom Considerations
- Scholars should have knowledge of AC and DC, as well as voltage
- Some basic chemistry and physics concepts are useful to know, such as expansion rate and oxidation
Pros
- Provides thorough explanations
- Clear picture quality makes it easier to understand
Cons
- None