Working systematically

There are 604 NRICH Mathematical resources connected to Working systematically
An Equilateral Triangular Problem
problem
Favourite

An equilateral triangular problem

Age
11 to 14
Challenge level
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Take an equilateral triangle and cut it into smaller pieces. What can you do with them?

Teddy Town
problem

Teddy town - part five

Age
5 to 11
Challenge level
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There are thirty six teddies in Teddy Town - six red, six blue, six yellow, six green, six purple and six turquoise. There are also thirty six houses, six of each colour. Can you put them on the map of Teddy Town according to the rules?

Teddy Town
problem

Teddy town - part four

Age
5 to 11
Challenge level
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There are twenty five teddies in Teddy Town - five red, five blue, five yellow, five green and five purple. There are also twenty five houses, five of each colour. Can you put them on the map of Teddy Town according to the rules?

Teddy Town
problem

Teddy town - part three

Age
5 to 11
Challenge level
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There are sixteen teddies in Teddy Town - four red, four blue, four yellow and four green. There are also sixteen houses, four of each colour. Can you put them on the map of Teddy Town according to the rules?

Teddy Town
problem

Teddy town - part two

Age
5 to 11
Challenge level
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There are nine teddies in Teddy Town - three red, three blue and three yellow. There are also nine houses, three of each colour. Can you put them on the map of Teddy Town according to the rules?

Adding machine
problem

Adding machine

Age
16 to 18
Challenge level
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Can you set the logic gates so that this machine can decide how many bulbs have been switched on?
Seeing Rhombuses
problem

Seeing rhombuses

Age
7 to 11
Challenge level
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Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a rhombus.

Five More Coins
problem

Five more coins

Age
7 to 11
Challenge level
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Could Ben have any amount of money between 5p and £2 in his pocket if he has five coins?
The Tour de Clochemerle
problem

The tour de clochemerle

Age
14 to 18
Challenge level
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Can you work out where these 5 riders came in a not-quite-so-famous bike race?

Quadratic Matching
problem

Quadratic matching

Age
14 to 16
Challenge level
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Can you match each graph to one of the statements?