You probably know that a laser is used in a DVD player, but how exactly does it work? The last of five videos explains the laser setup in the DVD player and how it transmits stored information. The video begins with a drawing and ends with exploring the actual laser.

Concepts

engineering design, digital videography, lasers, technology resources

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Instructional Ideas

• Find a printed diagram of the laser setup to distribute to the class
• Use an old DVD player to show pupils the laser setup

Classroom Considerations

• Learners need to be cognizant of basic electronic components, such as diodes

• This video is hosted on YouTube

Pros

• Clear explanations make the topic easy to understand

Cons

• Abrupt transitions between parts are distracting
• The hand-drawn diagram doesn't look professional