Math Arguments
Problems, Questions, and Puzzles to spark discussion and argument in the maths classroom.
Categorize It!
How would you split these lines into 2 groups?
What other lines would fit into your groups? What wouldn't fit?
Which ones do belong?
Which One Doesn't Belong?
For what reason can each item be considered the "One That Doesn't Belong"?
How would you split these lines into 2 groups?
— Maths Teacher Circles (@MathsCirclesOz) October 6, 2020
What other lines would fit into your groups? What wouldn't fit?
What's The Split is a new problem style that we're working on, as inspired by John Mason & Anne Watson's work on boundary examples.#mtcoz #mtbos pic.twitter.com/qaOwBo36yq
"Which One Doesn't Belong?" are thought-provoking puzzles designed to sharpen skills in analysis, argument and divergent thinking.
Created by Christopher Danielson and collected in his book, Which One Doesn't Belong - A Shapes Book, WODB sets help students improve their understanding of math by requiring specific and clear language when delineating how each item differs from the others. A very large number of these have been collected at WODB, curated by Mary Bourassa.
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