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Crossed Ends
problem
Favourite

Crossed Ends

Age
11 to 14
Challenge level
1 out of 3

Crosses can be drawn on number grids of various sizes. What do you notice when you add opposite ends?

Triangles in a Square
problem
Favourite

Triangles in a Square

Age
11 to 14
Challenge level
1 out of 3

What are the possible areas of triangles drawn in a square?

Shady Symmetry
problem
Favourite

Shady Symmetry

Age
11 to 14
Challenge level
1 out of 3

How many different symmetrical shapes can you make by shading triangles or squares?

Multiples Sudoku
problem
Favourite

Multiples Sudoku

Age
11 to 14
Challenge level
1 out of 3

Each clue in this Sudoku is the product of the two numbers in adjacent cells.

Completing Quadrilaterals
problem
Favourite

Completing Quadrilaterals

Age
11 to 14
Challenge level
1 out of 3

We started drawing some quadrilaterals - can you complete them?