Math Resource - Which One Doesn't Belong

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5-7 8-10 11-13 14-18 18+ All Ages

Which One Doesn’t Belong?

Which one doesn’t belong? Featuring sets of shapes, numbers, graphs, and equations, this website provides plenty of thought-provoking puzzles for math teachers and students alike, inspired by the Mathical award-winning book of the same title by 2017 Festival presenter Christopher Danielson.

There are no answers provided, as there are many different, correct ways of choosing which one doesn’t belong. Try it for yourself!

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