Use the interactivity to investigate what kinds of triangles can be
drawn on peg boards with different numbers of pegs.
How many triangles can you make on the 3 by 3 pegboard?
Explore the triangles that can be made with seven sticks of the
I cut this square into two different shapes. What can you say about
the relationship between them?
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?
The ancient Egyptians were said to make right-angled triangles
using a rope with twelve equal sections divided by knots. What
other triangles could you make if you had a rope like this?
Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?
Try continuing these patterns made from triangles. Can you create
your own repeating pattern?
Can you make the most extraordinary, the most amazing, the most
unusual patterns/designs from these triangles which are made in a
We went to the cinema and decided to buy some bags of popcorn so we
asked about the prices. Investigate how much popcorn each bag holds
so find out which we might have bought.
Arrange your fences to make the largest rectangular space you can. Try with four fences, then five, then six etc.
Have a go at this 3D extension to the Pebbles problem.
Use your mouse to move the red and green parts of this disc. Can
you make images which show the turnings described?
Investigate the number of paths you can take from one vertex to
another in these 3D shapes. Is it possible to take an odd number
and an even number of paths to the same vertex?
This practical investigation invites you to make tessellating
shapes in a similar way to the artist Escher.
There are to be 6 homes built on a new development site. They could
be semi-detached, detached or terraced houses. How many different
combinations of these can you find?
How can you arrange the 5 cubes so that you need the smallest number of Brush Loads of paint to cover them? Try with other numbers of cubes as well.
These pictures show squares split into halves. Can you find other ways?
When newspaper pages get separated at home we have to try to sort
them out and get things in the correct order. How many ways can we
arrange these pages so that the numbering may be different?
What is the largest number of circles we can fit into the frame
without them overlapping? How do you know? What will happen if you
try the other shapes?
Investigate all the different squares you can make on this 5 by 5
grid by making your starting side go from the bottom left hand
point. Can you find out the areas of all these squares?
If we had 16 light bars which digital numbers could we make? How
will you know you've found them all?
How many different ways can you find of fitting five hexagons
together? How will you know you have found all the ways?
Is there a best way to stack cans? What do different supermarkets
do? How high can you safely stack the cans?
Investigate the different shaped bracelets you could make from 18 different spherical beads. How do they compare if you use 24 beads?
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 find ways of joining cubes together so that 28 faces are
This challenge involves eight three-cube models made from
interlocking cubes. Investigate different ways of putting the
models together then compare your constructions.
Make new patterns from simple turning instructions. You can have a
go using pencil and paper or with a floor robot.
In this challenge, you will work in a group to investigate circular
fences enclosing trees that are planted in square or triangular
How many shapes can you build from three red and two green cubes? Can you use what you've found out to predict the number for four red and two green?
How can you arrange these 10 matches in four piles so that when you
move one match from three of the piles into the fourth, you end up
with the same arrangement?
This practical problem challenges you to create shapes and patterns
with two different types of triangle. You could even try
The challenge here is to find as many routes as you can for a fence
to go so that this town is divided up into two halves, each with 8
A group of children are discussing the height of a tall tree. How would you go about finding out its height?
Sort the houses in my street into different groups. Can you do it in any other ways?
I like to walk along the cracks of the paving stones, but not the
outside edge of the path itself. How many different routes can you
find for me to take?
You cannot choose a selection of ice cream flavours that includes
totally what someone has already chosen. Have a go and find all the
different ways in which seven children can have ice cream.
What do these two triangles have in common? How are they related?
What is the smallest cuboid that you can put in this box so that
you cannot fit another that's the same into it?
If you have three circular objects, you could arrange them so that
they are separate, touching, overlapping or inside each other. Can
you investigate all the different possibilities?
In how many ways can you stack these rods, following the rules?
How many different cuboids can you make when you use four CDs or
DVDs? How about using five, then six?
Start with four numbers at the corners of a square and put the
total of two corners in the middle of that side. Keep going... Can
you estimate what the size of the last four numbers will be?
Investigate and explain the patterns that you see from recording
just the units digits of numbers in the times tables.
Ana and Ross looked in a trunk in the attic. They found old cloaks
and gowns, hats and masks. How many possible costumes could they
An activity making various patterns with 2 x 1 rectangular tiles.
Investigate the different ways you could split up these rooms so
that you have double the number.
Explore the different tunes you can make with these five gourds.
What are the similarities and differences between the two tunes you
These caterpillars have 16 parts. What different shapes do they make if each part lies in the small squares of a 4 by 4 square?