Can you recreate this Indian screen pattern? Can you make up
similar patterns of your own?
Can you describe what happens in this film?
It's hard to make a snowflake with six perfect lines of symmetry,
but it's fun to try!
Follow these instructions to make a five-pointed snowflake from a
square of paper.
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?
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
Can you deduce the pattern that has been used to lay out these
Where can you put the mirror across the square so that you can still "see" the whole square? How many different positions are possible?
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.
This practical problem challenges you to create shapes and patterns
with two different types of triangle. You could even try
How many differently shaped rectangles can you build using these
equilateral and isosceles triangles? Can you make a square?
This practical problem challenges you to make quadrilaterals with a loop of string. You'll need some friends to help!
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?
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 make the most extraordinary, the most amazing, the most
unusual patterns/designs from these triangles which are made in a
Follow the diagrams to make this patchwork piece, based on an
octagon in a square.
Looking at the picture of this Jomista Mat, can you decribe what
you see? Why not try and make one yourself?
Arrange your fences to make the largest rectangular space you can. Try with four fences, then five, then six etc.
How do you know if your set of dominoes is complete?
NRICH December 2006 advent calendar - a new tangram for each day in
the run-up to Christmas.
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?
An activity making various patterns with 2 x 1 rectangular tiles.
Ideas for practical ways of representing data such as Venn and
Investigate the smallest number of moves it takes to turn these
mats upside-down if you can only turn exactly three at a time.
Here's a simple way to make a Tangram without any measuring or
Imagine you have an unlimited number of four types of triangle. How many different tetrahedra can you make?
Can you make the birds from the egg tangram?
Here is a solitaire type environment for you to experiment with. Which targets can you reach?
This practical activity involves measuring length/distance.
Can you fit the tangram pieces into the outline of Little Ming playing the board game?
Can you fit the tangram pieces into the outline of this telephone?
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 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 outlines of these people?
Have a go at drawing these stars which use six points drawn around
a circle. Perhaps you can create your own designs?
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?
Take a counter and surround it by a ring of other counters that
MUST touch two others. How many are needed?
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?
Can you fit the tangram pieces into the outline of Wai Ping, Wah Ming and Chi Wing?
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?
Can you fit the tangram pieces into the outline of this junk?
Generate three random numbers to determine the side lengths of a triangle. What triangles can you draw?
Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.
Can you each work out the number on your card? What do you notice?
How could you sort the cards?
The challenge for you is to make a string of six (or more!) graded cubes.
Use the tangram pieces to make our pictures, or to design some of
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