Describing patterns and sequences

There are 124 NRICH Mathematical resources connected to Describing patterns and sequences
Getting round the city
problem

Getting round the city

Age
11 to 16
In a city with a grid system of roads, how do you get from A to B?
Rods and Rods
problem

Rods and rods

Age
7 to 11
Challenge level
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Using only the red and white rods, how many different ways are there to make up the other colours of rod?
Steps to the Podium
problem

Steps to the podium

Age
7 to 14
Challenge level
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It starts quite simple but great opportunities for number discoveries and patterns!
polygonals
problem

Polygonals

Age
7 to 11
Challenge level
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Polygonal numbers are those that are arranged in shapes as they enlarge. Explore the polygonal numbers drawn here.
Paving Paths
problem

Paving paths

Age
11 to 14
Challenge level
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How many different ways can I lay 10 paving slabs, each 2 foot by 1 foot, to make a path 2 foot wide and 10 foot long from my back door into my garden, without cutting any of the paving slabs?
Archimedes and numerical roots
problem

Archimedes and numerical roots

Age
14 to 16
Challenge level
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The problem is how did Archimedes calculate the lengths of the sides of the polygons which needed him to be able to calculate square roots?
Many Matildas
problem

Many matildas

Age
11 to 14
Challenge level
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MatildaMatildaMatil... What is the 1000th letter?
Sending Cards
problem

Sending cards

Age
7 to 11
Challenge level
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This challenge asks you to investigate the total number of cards that would be sent if four children send one to all three others. How many would be sent if there were five children? Six?
Taking Steps
problem

Taking steps

Age
7 to 11
Challenge level
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In each of the pictures the invitation is for you to: Count what you see. Identify how you think the pattern would continue.