Can you recreate this Indian screen pattern? Can you make up similar patterns of your own?
Follow these instructions to make a five-pointed snowflake from a square of paper.
It's hard to make a snowflake with six perfect lines of symmetry, but it's fun to try!
Can you deduce the pattern that has been used to lay out these bottle tops?
This practical investigation invites you to make tessellating shapes in a similar way to the artist Escher.
Where can you put the mirror across the square so that you can still "see" the whole square? How many different positions are possible?
This practical problem challenges you to create shapes and patterns with two different types of triangle. You could even try overlapping them.
Can you describe what happens in this film?
Using these kite and dart templates, you could try to recreate part of Penrose's famous tessellation or design one yourself.
This practical problem challenges you to make quadrilaterals with a loop of string. You'll need some friends to help!
A brief video looking at how you can sometimes use symmetry to distinguish knots. Can you use this idea to investigate the differences between the granny knot and the reef knot?
Looking at the picture of this Jomista Mat, can you decribe what you see? Why not try and make one yourself?
Follow the diagrams to make this patchwork piece, based on an octagon in a square.
This practical activity involves measuring length/distance.
Here is a solitaire type environment for you to experiment with. Which targets can you reach?
Take a counter and surround it by a ring of other counters that MUST touch two others. How many are needed?
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.
Using different numbers of sticks, how many different triangles are you able to make? Can you make any rules about the numbers of sticks that make the most triangles?
Can you make the most extraordinary, the most amazing, the most unusual patterns/designs from these triangles which are made in a special way?
An activity making various patterns with 2 x 1 rectangular tiles.
Ideas for practical ways of representing data such as Venn and Carroll diagrams.
Here's a simple way to make a Tangram without any measuring or ruling lines.
Arrange your fences to make the largest rectangular space you can. Try with four fences, then five, then six etc.
NRICH December 2006 advent calendar - a new tangram for each day in the run-up to Christmas.
Can you make the birds from the egg tangram?
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?
Can you fit the tangram pieces into the outline of Wai Ping, Wah Ming and Chi Wing?
Can you fit the tangram pieces into the outlines of these people?
Can you fit the tangram pieces into the outline of this brazier for roasting chestnuts?
Can you fit the tangram pieces into the outlines of these clocks?
Can you fit the tangram pieces into the outline of the child walking home from school?
Can you fit the tangram pieces into the outlines of the chairs?
Can you fit the tangram pieces into the outlines of the lobster, yacht and cyclist?
Can you fit the tangram pieces into the outline of Little Fung at the table?
Can you fit the tangram pieces into the outline of Little Ming playing the board game?
What happens to the area of a square if you double the length of the sides? Try the same thing with rectangles, diamonds and other shapes. How do the four smaller ones fit into the larger one?
These practical challenges are all about making a 'tray' and covering it with paper.
Factors and Multiples game for an adult and child. How can you make sure you win this game?
Take 5 cubes of one colour and 2 of another colour. How many different ways can you join them if the 5 must touch the table and the 2 must not touch the table?
Can you fit the tangram pieces into the outline of this telephone?
Have a go at drawing these stars which use six points drawn around a circle. Perhaps you can create your own designs?
How do you know if your set of dominoes is complete?
Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.
Here is a chance to create some Celtic knots and explore the mathematics behind them.
Here is a chance to create some attractive images by rotating shapes through multiples of 90 degrees, or 30 degrees, or 72 degrees or...
The challenge for you is to make a string of six (or more!) graded cubes.
You have been given three shapes made out of sponge: a sphere, a cylinder and a cone. Your challenge is to find out how to cut them to make different shapes for printing.
Take a rectangle of paper and fold it in half, and half again, to make four smaller rectangles. How many different ways can you fold it up?
Can you each work out the number on your card? What do you notice? How could you sort the cards?
In this challenge, you will work in a group to investigate circular fences enclosing trees that are planted in square or triangular arrangements.