Lesson Plan

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Lesson Plan
Grade: Date: 17/01/2026
Subject: Computer Science
Lesson Topic: Draw logic circuits based on problem statements, logic expressions or truth tables
Learning Objective/s:
  • Describe the basic Boolean operators and their standard symbols.
  • Construct accurate truth tables for given Boolean expressions.
  • Translate logical expressions and truth tables into correct logic‑circuit diagrams using operator precedence and the sum‑of‑products method.
  • Verify a drawn circuit by comparing its truth table with the original specification.
Materials Needed:
  • Projector or interactive whiteboard
  • Printed worksheets with problem statements and truth tables
  • Handout of logic‑gate symbols
  • Physical logic‑gate kits or simulation software (e.g., Logisim)
  • Markers and whiteboard
  • Teacher answer‑key sheets
 Introduction:
Begin with a quick recall of the basic Boolean operators, asking students to name the symbols for AND, OR and NOT. Connect this knowledge to the exam requirement of converting problem statements into circuit diagrams. Explain that by the end of the lesson they will be able to produce accurate circuit drawings from both expressions and truth tables, which they will demonstrate through guided practice.
Lesson Structure:
  1. Do‑Now (5') – Short quiz on Boolean operator symbols displayed on the board.
  2. Mini‑lecture (10') – Review operator precedence and introduce the sum‑of‑products (SOP) method with projector examples.
  3. Guided practice (15') – Whole‑class walkthrough converting F = (A ∧ B) ∨ (¬C) into a circuit, modelling each step.
  4. Pair activity (15') – Students receive a truth table, apply the SOP method, and draw the corresponding circuit using gate kits or simulation software.
  5. Check for understanding (5') – Exit ticket: write one SOP step for a new truth table.
  6. Extension (optional 5') – Challenge: simplify a circuit using Karnaugh maps.
Conclusion:
Recap the four key steps: identify operators, replace them with gate symbols, apply the SOP method for truth tables, and verify the circuit with a truth‑table check. Collect exit tickets and remind students to complete the homework worksheet that asks them to translate three new problem statements into circuits. Homework: finish the worksheet and bring any questions to the next lesson.