Work Done, Power and Efficiency — Interactive Lesson (Ages 14–16)

How much energy does a crane use, how fast does a kettle transfer it, and where does the wasted energy go? This 22-slide interactive lesson on work done and power takes pupils from first ideas to exam-style explanations, with 13 self-marking activities and nothing to prepare beforehand.

Teaching Work Done, Power and Efficiency in GCSE Physics

Pupils name the main energy stores and transfer pathways, then calculate work done with W = F × s, power with P = E ÷ t and efficiency as useful output over total input. They explain why wasted energy is dissipated as thermal energy, why no machine can be more than 100% efficient, and how lubrication and insulation reduce unwanted energy transfers, with a quick recap of kinetic and gravitational potential energy.

What Pupils Will Learn

• Name the main energy stores and the ways energy is transferred.
• Calculate work done using W = F × s.
• Calculate power using P = E ÷ t.
• Calculate efficiency and explain where wasted energy goes.
• Describe ways to reduce unwanted energy transfers.

What’s Included

• 22-slide interactive lesson
• 13 self-marking activities: multiple-choice questions, true-or-false checks, sorting tasks, drag-and-drop categorising and fill-in-the-gap questions
• Step-by-step teaching cards that reveal one point at a time
• A written explanation task with a model answer for self-assessment

Why Teachers Love It

• No prep — open it on an interactive whiteboard, laptop or tablet
• Instant feedback explains every answer, right or wrong
• Everyday examples make physics feel real
• Works for whole-class teaching, independent study or revision

Curriculum Alignment

Supports UK GCSE Physics and Combined Science (AQA, Edexcel and OCR) and the Nigerian Senior Secondary Physics curriculum (SS1), including WAEC and NECO exam preparation.

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FAQ

What year groups is this for? Years 10–11 (ages 14–16), and SS1 in Nigeria.

Is it self-marking? Yes — all 13 activities give instant feedback.

Do pupils need to log in? No. The lesson runs in any modern web browser.

Can I use it for revision? Yes. Pupils can replay it as often as they like, and the results screen shows which questions to review before a test.