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Print It out (11-14)

Shady Symmetry
problem
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Shady Symmetry

Age
11 to 14
Challenge level
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How many different symmetrical shapes can you make by shading triangles or squares?
Crossed Ends
problem
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Crossed Ends

Age
11 to 14
Challenge level
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Crosses can be drawn on number grids of various sizes. What do you notice when you add opposite ends?
Multiples Sudoku
problem
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Multiples Sudoku

Age
11 to 14
Challenge level
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Each clue in this Sudoku is the product of the two numbers in adjacent cells.
Triangles in a Square
problem
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Triangles in a Square

Age
11 to 14
Challenge level
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What are the possible areas of triangles drawn in a square?
Completing Quadrilaterals
problem
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Completing Quadrilaterals

Age
11 to 14
Challenge level
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We started drawing some quadrilaterals - can you complete them?