IGCSE Physics: Work Done and GPE | Edexcel Modular | Unit 3 | L8

IGCSE Physics: Work Done and GPE | Edexcel Modular | Unit 3 | L8

This lesson covers spec points 3.11, 3.12 and 3.13 — knowing and using
W = Fd, understanding that work done equals energy transferred, and calculating
gravitational potential energy using GPE = mgh.

PowerPoint includes:
• Retrieval starter reviewing energy stores from L1
• Direct Instruction (I Do) — work done defined; the key condition (force must
cause movement) stated; W = Fd introduced with all three rearrangements;
GPE = mgh introduced with all three rearrangements; the misconception about
carrying a bag horizontally addressed; worked examples for both equations
• Guided Practice (We Do) — three problems: calculate work done by a force;
calculate GPE of an object lifted; rearrange to find height from GPE
• Independent Practice (You Do) — activity sheet with exam-style questions
• Review and Reflect — MCQs and exit ticket

Activity Sheet includes:
• Formula box: W = F × d; GPE = m × g × h
• 13 exam-style questions plus stretch, providing extensive calculation
practice across both equations; all three rearrangements covered; contexts
include a shopping trolley, removal worker, cat jumping, rock lifted and a
two-step ramp problem (work done vs GPE gained)
• Stretch question reveals the energy lost to friction on a ramp — links
forward to conservation of energy in L9
• Full mark scheme for teacher use