A short investigation that has students finding the number of possible combinations of pairs items from a given set, through listing numbers of games played in different sizes of sports league. Able students will find the algebraic rule - n(n-1) games when playing home and away - and find the link to triangle numbers when teams only play each other once. A good mix of algebra and probability themes in this, and a wide range of age groups can find it useful at their level. I'm sharing it as a Wo
8th - 11th
Math, Statistics
FREE
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Maths Teacher since 2005, including as Head of Department.
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