Dodgy fractions
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An interesting investigation reinforcing how to subtract fractions correctly, by exploring a family of fractions for which the commonly used incorrect method of subtract the numerators, subtract the denominators gives the correct answer. Students must have prior fluency in the correct method to avoid confusion.
Proving your findings requires factorising quadratics and simplifying algebraic fractions.
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Review this resourceBrilliant resource. Well structured, pupils needed a few hints but still enjoyed it.
27/11/2013
