This lesson brings together pupils’ understanding of forces by exploring pressure in solids, liquids and gases, and introducing the idea of upthrust—the force that makes objects float. Students recap Hooke’s Law and force graphs before learning how to calculate pressure using force and area. They then apply this knowledge to real‑world examples such as snowshoes, high heels, deep‑sea pressure, and floating objects.
The lesson is highly visual and practical, using diagrams, particle models, and everyday examples to make abstract ideas accessible for Year 7 learners.
What Students Will Learn
How Hooke’s Law links to force and extension graphs
How to calculate pressure using force and area
Why pressure changes depending on surface area
How pressure works in air and water
What upthrust is and how it makes things float
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