There are **25** NRICH Mathematical resources connected to **Programming**, you may find related items under Physical and Digital Manipulatives.

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The well known Fibonacci sequence is 1 ,1, 2, 3, 5, 8, 13, 21.... How many Fibonacci sequences can you find containing the number 196 as one of the terms?

How was the data for this problem compiled? A guided tour through the process.

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Create a symmetrical fabric design based on a flower motif - and realise it in Logo.

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Moiré patterns are intriguing interference patterns. Create your own beautiful examples using LOGO!

We need computer programmers! Logo is a great entry-level programming language - and you can create stunning graphics while you learn.

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How would you judge a competition to draw a freehand square?

This article explains the concepts involved in scientific mathematical computing. It will be very useful and interesting to anyone interested in computer programming or mathematics.

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Can you think like a computer and work out what this flow diagram does?

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More Logo for beginners. Now learn more about the REPEAT command.

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Can you puzzle out what sequences these Logo programs will give? Then write your own Logo programs to generate sequences.

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This part introduces the use of Logo for number work. Learn how to use Logo to generate sequences of numbers.

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Write a Logo program, putting in variables, and see the effect when you change the variables.

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Learn about Pen Up and Pen Down in Logo

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Turn through bigger angles and draw stars with Logo.

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More Logo for beginners. Learn to calculate exterior angles and draw regular polygons using procedures and variables.

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Learn to write procedures and build them into Logo programs. Learn to use variables.

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Learn how to draw circles using Logo. Wait a minute! Are they really circles? If not what are they?

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This is the second in a twelve part introduction to Logo for beginners. In this part you learn to draw polygons.

How do you write a computer program that creates the illusion of stretching elastic bands between pegs of a Geoboard? The answer contains some surprising mathematics.

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What happens when a procedure calls itself?

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A Short introduction to using Logo. This is the first in a twelve part series.

This follows up the 'magic Squares for Special Occasions' article which tells you you to create a 4by4 magicsquare with a special date on the top line using no negative numbers and no repeats.

This is about a fiendishly difficult jigsaw and how to solve it using a computer program.

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Helen made the conjecture that "every multiple of six has more factors than the two numbers either side of it". Is this conjecture true?