Diffusion and surface area to volume ratio
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Lesson outcome
I can calculate the surface area, volume and surface area to volume ratio of different sized cubes and observe how long it takes for a liquid to diffuse into them.
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The concepts of surface area, volume, and surface area to volume ratio.
Calculation of the surface areas, volumes and surface area to volume ratios of cubes of different sizes.
Use of coloured agar cubes of different sizes to observe time taken for acid to diffuse to the centre of each cube.
Interpretation of results and explanation using ideas about surface area to volume ratio and diffusion.
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