Exploring balance and centres of mass can be great fun. The resulting structures can seem impossible. Here are some images to encourage you to experiment with non-breakable objects of your own.

This package contains hands-on code breaking activities based on the Enigma Schools Project. Suitable for Stages 2, 3 and 4.

Make some celtic knot patterns using tiling techniques

This article for pupils gives an introduction to Celtic knotwork patterns and a feel for how you can draw them.

This article for students gives some instructions about how to make some different braids.

These models have appeared around the Centre for Mathematical Sciences. Perhaps you would like to try to make some similar models of your own.

You could use just coloured pencils and paper to create this design, but it will be more eye-catching if you can get hold of hammer, nails and string.

Make an equilateral triangle by folding paper and use it to make patterns of your own.

Galileo, a famous inventor who lived about 400 years ago, came up with an idea similar to this for making a time measuring instrument. Can you turn your pendulum into an accurate minute timer?

It might seem impossible but it is possible. How can you cut a playing card to make a hole big enough to walk through?

A game to make and play based on the number line.

Follow these instructions to make a three-piece and/or seven-piece tangram.

In this article for teachers, Bernard uses some problems to suggest that once a numerical pattern has been spotted from a practical starting point, going back to the practical can help explain. . . .

Arrange your fences to make the largest rectangular space you can. Try with four fences, then five, then six etc.

A description of how to make the five Platonic solids out of paper.

Learn about Pen Up and Pen Down in Logo

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

Surprise your friends with this magic square trick.

Make a mobius band and investigate its properties.

How can you make a curve from straight strips of paper?

Make a cube with three strips of paper. Colour three faces or use the numbers 1 to 6 to make a die.

Using these kite and dart templates, you could try to recreate part of Penrose's famous tessellation or design one yourself.

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

These are pictures of the sea defences at New Brighton. Can you work out what a basic shape might be in both images of the sea wall and work out a way they might fit together?

Have you noticed that triangles are used in manmade structures? Perhaps there is a good reason for this? 'Test a Triangle' and see how rigid triangles are.

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

Have a go at drawing these stars which use six points drawn around a circle. Perhaps you can create your own designs?

Use the tangram pieces to make our pictures, or to design some of your own!

Did you know mazes tell stories? Find out more about mazes and make one of your own.

Can you make dice stairs using the rules stated? How do you know you have all the possible stairs?

Ideas for practical ways of representing data such as Venn and Carroll diagrams.

Ahmed is making rods using different numbers of cubes. Which rod is twice the length of his first rod?

Here's a simple way to make a Tangram without any measuring or ruling lines.

You have a set of the digits from 0 – 9. Can you arrange these in the 5 boxes to make two-digit numbers as close to the targets as possible?

Kate has eight multilink cubes. She has two red ones, two yellow, two green and two blue. She wants to fit them together to make a cube so that each colour shows on each face just once.

Paint a stripe on a cardboard roll. Can you predict what will happen when it is rolled across a sheet of paper?

It's hard to make a snowflake with six perfect lines of symmetry, but it's fun to try!

Follow the diagrams to make this patchwork piece, based on an octagon in a square.

Follow these instructions to make a five-pointed snowflake from a square of paper.

Use the three triangles to fill these outline shapes. Perhaps you can create some of your own shapes for a friend to fill?

Kaia is sure that her father has worn a particular tie twice a week in at least five of the last ten weeks, but her father disagrees. Who do you think is right?

Make your own double-sided magic square. But can you complete both sides once you've made the pieces?

Have a look at what happens when you pull a reef knot and a granny knot tight. Which do you think is best for securing things together? Why?

This is a simple paper-folding activity that gives an intriguing result which you can then investigate further.

If you have ten counters numbered 1 to 10, how many can you put into pairs that add to 10? Which ones do you have to leave out? Why?

Can you order pictures of the development of a frog from frogspawn and of a bean seed growing into a plant?