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 maintain competitive costs.

Concepts

engineering design, mechanical engineering, electric circuits, technology resources

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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 introductory chemistry and physics concepts are helpful to know, such as the expansion rate and oxidation

• This video is hosted on YouTube

Pros

• Provides thorough explanations
• Clear picture quality makes it easier to understand

Cons

• None