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Use these slides to help you explain how you calculate
1. surface area of a cube
2. volume of a cube
3. surface area to volume ratio
Then complete secure, develop or challenge for practice. What do you notice? What happens to the surface area to volume ratio as the cube gets bigger?

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What is diffusion? Use the internet, revision guides to write a detailed explanation with diagrams.

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1. Explain diffusion in terms of the movement of particles

2. Describe examples of where diffusion occurs in nature
3. Calculate surface area and volumes of cubes and cuboids. Use this to calculate surface area to volume ratio

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Use these powerpoint and information to complete the booklet about examples of where diffusion happens.
Choose secure, develop or challenge from the tray