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?

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

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. . . .

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

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

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

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

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 group of children are discussing the height of a tall tree. How would you go about finding out its height?

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.

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

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

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.

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

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?

Learn about Pen Up and Pen Down in Logo

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

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

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

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

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.

Surprise your friends with this magic square trick.

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

Turn through bigger angles and draw stars with Logo.

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

What do these two triangles have in common? How are they related?

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

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

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!

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.

Make some celtic knot patterns using tiling techniques

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

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

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

Make a mobius band and investigate its properties.

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

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.

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

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

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

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

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

Here are some ideas to try in the classroom for using counters to investigate number patterns.

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