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Two Washers
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In this activity, learners create a mind and math puzzle that requires a three-dimensional solution.

Number Cruncher
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In this online puzzle game, learners need to choose a path from a starting number to a goal number. Along the path are simple operations (e.g.

Topological Puzzles
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In this activity, learners construct three math puzzles out of simple materials like wood, string, and Styrofoam.

Slush Rush
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In this online game, learners run an outer space drink stand and thirsty alien customers are on the way.

Factors and Multiples Puzzle
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This puzzle provides an interesting context which challenges learners to apply their knowledge of the properties of numbers.

Guesswork
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In this number puzzle/trick, learner #1 thinks of a number between 1 and 63. Learner #2 shows learner #1 six cards and asks them whether the cards contain their number.

100 Puzzles
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In this activity, learners find as many combinations of a hundred as they can using various puzzle pieces from a hundred square grid paper.
Magic Turtle Squares
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In this math activity, learners create a magic turtle where all the rows, columns and diagonals add up to fifteen.