Logo helps us to understand gradients of lines and why Muggles Magic is not magic but mathematics. See the problem Muggles magic.

Make a clinometer and use it to help you estimate the heights of tall objects.

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

Time for a little mathemagic! Choose any five cards from a pack and show four of them to your partner. How can they work out the fifth?

What happens when a procedure calls itself?

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.

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?

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. . . .

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

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

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

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

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

Turn through bigger angles and draw stars with Logo.

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

Learn about Pen Up and Pen Down in Logo

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

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

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

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

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

Make some celtic knot patterns using tiling techniques

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.

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

Build a scaffold out of drinking-straws to support a cup of water

As part of Liverpool08 European Capital of Culture there were a huge number of events and displays. One of the art installations was called "Turning the Place Over". Can you find our how it works?

Draw whirling squares and see how Fibonacci sequences and golden rectangles are connected.

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

How many differently shaped rectangles can you build using these equilateral and isosceles triangles? Can you make a square?

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

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?

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

Here is a chance to create some Celtic knots and explore the mathematics behind them.

What shape and size of drinks mat is best for flipping and catching?

How can you make an angle of 60 degrees by folding a sheet of paper twice?

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

Design and construct a prototype intercooler which will satisfy agreed quality control constraints.

What shapes should Elly cut out to make a witch's hat? How can she make a taller hat?

A jigsaw where pieces only go together if the fractions are equivalent.

Here is a solitaire type environment for you to experiment with. Which targets can you reach?

Move your counters through this snake of cards and see how far you can go. Are you surprised by where you end up?

The triangle ABC is equilateral. The arc AB has centre C, the arc BC has centre A and the arc CA has centre B. Explain how and why this shape can roll along between two parallel tracks.

Use the interactivity to listen to the bells ringing a pattern. Now it's your turn! Play one of the bells yourself. How do you know when it is your turn to ring?

I start with a red, a green and a blue marble. I can trade any of my marbles for two others, one of each colour. Can I end up with five more blue marbles than red after a number of such trades?

Arrange 9 red cubes, 9 blue cubes and 9 yellow cubes into a large 3 by 3 cube. No row or column of cubes must contain two cubes of the same colour.

Delight your friends with this cunning trick! Can you explain how it works?

A game in which players take it in turns to choose a number. Can you block your opponent?