Pressure in Solids, Liquids and Gases — Interactive Lesson (Ages 11–14)

Why do knives need to be sharp, why are dams thicker at the bottom, and why do ears pop on a plane? This 17-slide interactive lesson on calculating pressure takes pupils from first ideas to exam-style explanations, with 10 self-marking activities and nothing to prepare beforehand.

Teaching Pressure in Solids, Liquids and Gases in KS3 Science

Pupils calculate pressure with pressure = force ÷ area and explain designs that increase or reduce pressure, from knife edges to wide tractor tyres. They describe how liquid pressure increases with depth and acts in all directions, use the particle model to explain gas pressure, and describe how atmospheric pressure falls with height.

What Pupils Will Learn

• Calculate pressure using pressure = force ÷ area.
• Explain why some objects are designed to increase or reduce pressure.
• Describe how pressure in a liquid changes with depth.
• Explain gas pressure using particles.
• Describe how atmospheric pressure changes with height.

What’s Included

• 17-slide interactive lesson on calculating pressure
• 10 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 the UK Key Stage 3 Science curriculum and Nigerian Junior Secondary Basic Science (JSS3), building the foundations pupils need for GCSE, WAEC and NECO.

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FAQ

What year groups is this for? Year 9 (ages 11–14), and JSS3 in Nigeria.

Is it self-marking? Yes — all 10 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.