| Lesson Plan |
| Grade: |
Date: 01/12/2025 |
| Subject: Information Communication Technology ICT |
| Lesson Topic: Know and understand optical drives including CD, DVD, Blu-ray |
Learning Objective/s:
- Describe the basic components and operation of CD, DVD and Blu‑ray drives.
- Compare the laser wavelengths, capacities and data‑rates of CD, DVD and Blu‑ray formats.
- Explain how layering and pit size affect storage capacity.
- Identify typical applications and advantages/disadvantages of each optical medium.
- Apply knowledge by completing a revision checklist of key concepts.
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Materials Needed:
- Projector and screen
- Laptop with presentation slides
- Sample optical discs (CD, DVD, Blu‑ray)
- Handout with comparison table
- Whiteboard and markers
- Exit‑ticket slips
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Introduction:
Begin with a quick question: “What media have you used to store music, movies or games?” Capture responses, then link to the evolution from CD to Blu‑ray. State today’s success criteria – students will be able to identify key differences and explain why newer formats store more data.
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Lesson Structure:
- Do‑Now (5’) – Students list any optical media they own on a sticky note.
- Mini‑lecture (10’) – Overview of optical drive components and how lasers read/write pits.
- Interactive comparison (12’) – Show side‑by‑side slides of CD, DVD, Blu‑ray specs; students fill a Venn diagram on the handout.
- Hands‑on demo (10’) – Examine real discs; discuss layer count and capacity.
- Guided practice (8’) – Small groups answer the “Revision Checklist” questions using the handout.
- Check for understanding (5’) – Quick quiz via Kahoot or show of hands on key facts.
- Wrap‑up (5’) – Teacher summarises main points; students write one takeaway on exit ticket.
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Conclusion:
Recap the three formats, highlighting how laser wavelength and layering drive capacity and speed. Collect exit tickets to gauge retention and assign a short homework: create a table comparing CD, DVD and Blu‑ray for a future revision.
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