Lesson Plan

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Lesson Plan
Grade: Date: 25/02/2026
Subject: Physics
Lesson Topic: understand the concept of work, and recall and use work done = force × displacement in the direction of the force
Learning Objective/s:
  • Describe the concept of work as energy transfer caused by a force acting through a displacement.
  • Apply the dot‑product formula W = F s cosθ to calculate work for different force‑displacement angles.
  • Distinguish positive, negative and zero work and predict the resulting energy change.
  • Use work calculations to explain conservation of mechanical energy when only conservative forces act.
  • Solve textbook‑style problems involving horizontal pushes, inclined planes and gravity.
Materials Needed:
  • Projector or interactive whiteboard
  • Printed worksheet with example problems and practice questions
  • Force‑displacement vector cards for a hands‑on activity
  • Calculators or classroom computers
  • Whiteboard and markers
 Introduction:
Begin with a short video of a sled being pushed to capture interest, then ask students what energy changes they observe. Prompt recall of previous energy‑conservation ideas and state the success criteria: students will calculate work and explain its sign.
Lesson Structure:
  1. Do‑now (5') – quick quiz on earlier energy concepts.
  2. Mini‑lecture (10') – define work, present W = F s cosθ, emphasize scalar nature.
  3. Guided derivation (8') – derive the work‑force‑displacement relationship using vector components.
  4. Interactive demo (7') – students use vector cards to identify positive, negative and zero work scenarios.
  5. Worked examples (10') – solve the horizontal push and inclined‑plane problems together.
  6. Independent practice (5') – students attempt three practice questions from the notes.
  7. Check for understanding (5') – exit ticket: one sentence explaining why the normal force does no work on a frictionless incline.
Conclusion:
Recap the definition of work, the formula, and the meaning of its sign. Collect the exit tickets to gauge understanding, and assign the worksheet for homework to reinforce calculations and misconceptions.