This article for pupils gives an introduction to Celtic knotwork patterns and a feel for how you can draw them.
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?
This article for students gives some instructions about how to make some different braids.
Make some celtic knot patterns using tiling techniques
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.
How does the time of dawn and dusk vary? What about the Moon, how does that change from night to night? Is the Sun always the same? Gather data to help you explore these questions.
Build a scaffold out of drinking-straws to support a cup of water
It might seem impossible but it is possible. How can you cut a playing card to make a hole big enough to walk through?
Make a spiral mobile.
Design and construct a prototype intercooler which will satisfy agreed quality control constraints.
Learn to write procedures and build them into Logo programs. Learn to use variables.
A description of how to make the five Platonic solids out of paper.
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?
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.
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 Jo make a gym bag for her trainers from the piece of fabric she has?
Write a Logo program, putting in variables, and see the effect when you change the variables.
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?
Which of the following cubes can be made from these nets?
I start with a red, a blue, a green and a yellow marble. I can trade any of my marbles for three others, one of each colour. Can I end up with exactly two marbles of each colour?
What shape would fit your pens and pencils best? How can you make it?
A jigsaw where pieces only go together if the fractions are equivalent.
These models have appeared around the Centre for Mathematical Sciences. Perhaps you would like to try to make some similar models of your own.
Use the tangram pieces to make our pictures, or to design some of your own!
The Tower of Hanoi is an ancient mathematical challenge. Working on the building blocks may help you to explain the patterns you notice.
Here is a chance to create some attractive images by rotating shapes through multiples of 90 degrees, or 30 degrees, or 72 degrees or...
Can you use small coloured cubes to make a 3 by 3 by 3 cube so that each face of the bigger cube contains one of each colour?
What shapes should Elly cut out to make a witch's hat? How can she make a taller hat?
More Logo for beginners. Now learn more about the REPEAT command.
Turn through bigger angles and draw stars with Logo.
Learn about Pen Up and Pen Down in Logo
What happens when a procedure calls itself?
Can you puzzle out what sequences these Logo programs will give? Then write your own Logo programs to generate sequences.
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?
Delight your friends with this cunning trick! Can you explain how it works?
How can you make an angle of 60 degrees by folding a sheet of paper twice?
You can use a clinometer to measure the height of tall things that you can't possibly reach to the top of, 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 your own double-sided magic square. But can you complete both sides once you've made the pieces?
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.
Make an equilateral triangle by folding paper and use it to make patterns of your own.
More Logo for beginners. Learn to calculate exterior angles and draw regular polygons using procedures and variables.
Imagine you have an unlimited number of four types of triangle. How many different tetrahedra can you make?
Learn how to draw circles using Logo. Wait a minute! Are they really circles? If not what are they?
Generate three random numbers to determine the side lengths of a triangle. What triangles can you draw?
This part introduces the use of Logo for number work. Learn how to use Logo to generate sequences of numbers.
How many differently shaped rectangles can you build using these equilateral and isosceles triangles? Can you make a square?
Logo helps us to understand gradients of lines and why Muggles Magic is not magic but mathematics. See the problem Muggles magic.
Here is a chance to create some Celtic knots and explore the mathematics behind them.
How is it possible to predict the card?