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problem
Baked bean cans
5 to 7
Is there a best way to stack cans? What do different supermarkets
do? How high can you safely stack the cans?
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Problem solving, using and applying and functional mathematics
Problem solving is at the heart of the NRICH site. All the problems
give learners opportunities to learn, develop or use mathematical
concepts and skills. Read here for more information.
problem
Counting on letters
11 to 14
The letters of the word ABACUS have been arranged in the shape of a
triangle. How many different ways can you find to read the word
ABACUS from this triangular pattern?
problem
Favourite
Twice as big?
7 to 11
Investigate how the four L-shapes fit together to make an enlarged L-shape. You could explore this idea with other shapes too.
problem
LOGO challenge 11 - more on circles
11 to 16
Thinking of circles as polygons with an infinite number of sides - but how does this help us with our understanding of the circumference of circle as pi x d? This challenge investigates this relationship.
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Triangle numbers in the classroom
Some of our experiences of discovering and using triangle numbers in a range of contexts.
problem
Favourite
Folium of Descartes
16 to 18
Investigate the family of graphs given by the equation x^3+y^3=3axy for different values of the constant a.
problem
Triangular hexagons
7 to 11
Investigate these hexagons drawn from different sized equilateral
triangles.