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Nicolle KuitersHow to use Algebra to play "games"/ tricks using a calendar S3/S4
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Take any calendar. Tell your friend to choose 4 days that form a square like the four to the right. Your friend should tell you only the sum of the four days, and you can tell her what the four days are.
How does the puzzle work? You know how people alwaAlgebra imported lessons math teaching Games Puzzle Calendar for:mrmont
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