Reasoning, convincing and proving
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problemOverlaps
Age11 to 14Challenge level
Can you find ways to put numbers in the overlaps so the rings have equal totals?
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problemQuadrilaterals in a square
Age11 to 14Challenge level
What's special about the area of quadrilaterals drawn in a square?
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problemTriangles in a square
Age11 to 14Challenge level
What are the possible areas of triangles drawn in a square?
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articleReasoning: identifying opportunities
In this article for primary teachers we consider in depth when we might reason which helps us understand what reasoning 'looks like'.
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problemSchool fair necklaces
Age5 to 11Challenge level
How many possible symmetrical necklaces can you find? How do you know you've found them all?
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problemCompare the cups
Age5 to 7Challenge level
You'll need a collection of cups for this activity.
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problemCount the crayons
Age5 to 7Challenge level
How could you estimate the number of pencils/pens in these pictures?
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problemDifference Sudoku
Age14 to 16Challenge level
Use the differences to find the solution to this Sudoku.
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problemDoubling fives
Age5 to 7Challenge level
This activity focuses on doubling multiples of five.