Watch this "Notes on a Triangle" film. Can you recreate parts of the film using cut-out triangles?
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.
Can you see which tile is the odd one out in this design? Using the
basic tile, can you make a repeating pattern to decorate our wall?
Have you ever noticed the patterns in car wheel trims? These
questions will make you look at car wheels in a different way!
Can you recreate this Indian screen pattern? Can you make up
similar patterns of your own?
This practical activity challenges you to create symmetrical designs by cutting a square into strips.
You'll need a collection of cups for this activity.
This practical problem challenges you to create shapes and patterns
with two different types of triangle. You could even try
What shapes can you make by folding an A4 piece of paper?
For this activity which explores capacity, you will need to collect some bottles and jars.
We can cut a small triangle off the corner of a square and then fit
the two pieces together. Can you work out how these shapes are made
from the two pieces?
Make a chair and table out of interlocking cubes, making sure that the chair fits under the table!
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.
Can you describe a piece of paper clearly enough for your partner to know which piece it is?
Try continuing these patterns made from triangles. Can you create your own repeating pattern?
You will need a long strip of paper for this task. Cut it into different lengths. How could you find out how long each piece is?
Have a go at making a few of these shapes from paper in different sizes. What patterns can you create?
We have a box of cubes, triangular prisms, cones, cuboids,
cylinders and tetrahedrons. Which of the buildings would fall down
if we tried to make them?
In this activity focusing on capacity, you will need a collection of different jars and bottles.
Using a loop of string stretched around three of your fingers, what
different triangles can you make? Draw them and sort them into
Can you make a rectangle with just 2 dominoes? What about 3, 4, 5,
Explore the triangles that can be made with seven sticks of the
Sara and Will were sorting some pictures of shapes on cards. "I'll collect the circles," said Sara. "I'll take the red ones," answered Will. Can you see any cards they would both want?
Can you fit the tangram pieces into the outlines of these people?
Can you fit the tangram pieces into the outlines of these clocks?
NRICH December 2006 advent calendar - a new tangram for each day in
the run-up to Christmas.
Can you make the most extraordinary, the most amazing, the most
unusual patterns/designs from these triangles which are made in a
Here's a simple way to make a Tangram without any measuring or
Can you fit the tangram pieces into the outline of the child walking home from school?
Make a cube out of straws and have a go at this practical
Use the three triangles to fill these outline shapes. Perhaps you can create some of your own shapes for a friend to fill?
Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.
Ideas for practical ways of representing data such as Venn and
Can you make the birds from the egg tangram?
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 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 this junk?
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 Little Fung at the table?
Can you fit the tangram pieces into the outline of this brazier for roasting chestnuts?
Have a go at drawing these stars which use six points drawn around
a circle. Perhaps you can create your own designs?
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?
Can you fit the tangram pieces into the outlines of the lobster, yacht and cyclist?
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?
Make a flower design using the same shape made out of different sizes of paper.
Make new patterns from simple turning instructions. You can have a go using pencil and paper or with a floor robot.
This is a simple paper-folding activity that gives an intriguing result which you can then investigate further.