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Spiral Snail

Weekly Problem 14 - 2012
A snail slithers around on a coordinate grid. At what position does he finish?

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Ten Hidden Squares

These points all mark the vertices (corners) of ten hidden squares. Can you find the 10 hidden squares?

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Cops and Robbers

Can you find a reliable strategy for choosing coordinates that will locate the robber in the minimum number of guesses?

Transformation Tease

Stage: 2 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

After each transformation (translation, reflection or rotation), look at each point and ask yourself:

  • What has happened to the x coordinate?
  • What has happened to the y coordinate?