A range of concrete activites for students to explore the relationship between the size of particles or parts and the total surface area. Concept is important in explaining the function of alveoli in the lungs, villi in the intestine, particle size in reaction rate and catalysis. The concept can be explored at differentiated levels from the basic idea to deriving a quantitative relationship, depending on age, ability and context. Additional activities are included to demonstrate the functionality of moisture and thinness of the walls in the alveoli.
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£5.00