A Tarsia activity by Alan Catley. The idea here is to introduce the concept of algebraic partial fraction by first of splitting the fraction 3/28 into its partial fractions but note that there are lots of wrong answers (all ‘feasible’ initially) that have been placed around the edge of the puzzle. Once the correct numerical answer has been found the concept of only the simplest algebraic partial fraction can be introduced. They should then be able to find a few in the puzzle and will hopefully get inquisitive about the other more difficult cases.
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