Lesson Plan

Resources → Subject Notes → Computer Science → Notes
Lesson Plan
Grade: Date: 17/01/2026
Subject: Computer Science
Lesson Topic: Write a logic expression from a problem statement, logic circuit or truth table
Learning Objective/s:
  • Describe Boolean variables and the basic operators (AND, OR, NOT, XOR).
  • Translate English problem statements and circuit diagrams into correct Boolean expressions.
  • Derive Boolean expressions from truth tables using Sum‑of‑Products or Product‑of‑Sums methods.
  • Simplify derived expressions using Boolean identities or Karnaugh‑map reasoning.
Materials Needed:
  • Projector or interactive whiteboard
  • Slides/handout summarising Boolean operators and truth tables
  • Worksheets with practice problems
  • Printed or digital set of logic‑gate symbols
  • Laptops/computers with a Boolean expression editor or simulation software
 Introduction:
Begin with a quick poll: who has used Boolean logic in everyday decisions, like setting a phone lock? Review that Boolean variables are true/false and recall the basic AND, OR, NOT symbols. Explain that by the end of the lesson they will confidently write logical expressions from English statements, circuit diagrams, or truth tables.
Lesson Structure:
  1. Do‑Now (5’) – Short quiz on Boolean operators displayed on the board.
  2. Mini‑lecture (10’) – Review variables, operators, and translation rules from English to symbols.
  3. Guided practice (15’) – Work through Example 1 (problem statement) and Example 2 (circuit) together, checking understanding.
  4. Independent activity (15’) – Students solve the three practice questions, applying SOP/POS where needed; teacher circulates.
  5. Check for understanding (5’) – Whole‑class review of answers and clarification of misconceptions.
Conclusion:
Summarise the key steps for converting statements, circuits, and truth tables into Boolean expressions. Ask each student to write one exit‑ticket expression that captures today’s learning. Assign homework: complete a worksheet that includes a new truth‑table conversion and simplify the resulting expression.