Lesson Plan

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Lesson Plan
Grade: Date: 17/01/2026
Subject: Computer Science
Lesson Topic: Understand the role of the CPU and the meaning of microprocessor
Learning Objective/s:
  • Describe the fetch‑decode‑execute cycle and its three stages.
  • Identify the main components of a CPU and their functions.
  • Explain the concept of a microprocessor and how it differs from the abstract CPU.
  • Compare performance factors such as clock speed, cores, and pipelining.
  • Apply knowledge by tracing a simple instruction through the CPU cycle.
Materials Needed:
  • Projector or interactive whiteboard
  • Slides showing CPU diagram and fetch‑decode‑execute cycle
  • Printed handout with CPU component table
  • Short video clip of microprocessor evolution
  • Worksheet with revision questions
  • Optional: CPU simulation software or demo board
 Introduction:
Begin with a quick poll: who can name the part of a computer that “thinks”? Build on prior knowledge of the motherboard and memory, reminding students of earlier hardware lessons. Explain that today’s success criteria are to articulate how the CPU processes instructions and to distinguish a CPU from a microprocessor.
Lesson Structure:
  1. Do‑Now (5') – Students answer the quick revision questions on the board.
  2. Mini‑lecture (10') – Explain the fetch‑decode‑execute cycle using a diagram.
  3. Guided exploration (12') – Walk through the CPU component table, discussing each part’s function.
  4. Microprocessor overview (8') – Show a short video on the evolution and physical implementation of microprocessors.
  5. Interactive simulation (10') – Learners use a CPU simulator to trace an ADD instruction through the three stages.
  6. Check for understanding (5') – Quick quiz (Kahoot or show of hands) on key concepts.
  7. Consolidation activity (5') – Pair work completing worksheet questions and discussing answers.
Conclusion:
Summarise the three CPU stages and the key difference between a CPU and a microprocessor. Students complete an exit ticket by writing one example of how a microprocessor’s integration benefits modern devices. For homework, assign research on a current microprocessor model, asking learners to list its clock speed and core count.