Can you cut a regular hexagon into two pieces to make a parallelogram? Try cutting it into three pieces to make a rhombus!
What shape is made when you fold using this crease pattern? Can you make a ring design?
Paint a stripe on a cardboard roll. Can you predict what will happen when it is rolled across a sheet of paper?
Can you visualise what shape this piece of paper will make when it is folded?
A game to make and play based on the number line.
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?
Are all the possible combinations of two shapes included in this set of 27 cards? How do you know?
Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.
What is the greatest number of squares you can make by overlapping three squares?
Exploring and predicting folding, cutting and punching holes and making spirals.
This practical problem challenges you to make quadrilaterals with a loop of string. You'll need some friends to help!
Can you put these shapes in order of size? Start with the smallest.
Have a look at what happens when you pull a reef knot and a granny knot tight. Which do you think is best for securing things together? Why?
Use the tangram pieces to make our pictures, or to design some of your own!
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 make the birds from the egg tangram?
An activity making various patterns with 2 x 1 rectangular tiles.
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?
Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.
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?
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?
If these balls are put on a line with each ball touching the one in front and the one behind, which arrangement makes the shortest line of balls?
Looking at the picture of this Jomista Mat, can you decribe what you see? Why not try and make one yourself?
These practical challenges are all about making a 'tray' and covering it with paper.
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?
Factors and Multiples game for an adult and child. How can you make sure you win this game?
How many different cuboids can you make when you use four CDs or DVDs? How about using five, then six?
Where can you put the mirror across the square so that you can still "see" the whole square? How many different positions are possible?
Make a cube out of straws and have a go at this practical challenge.
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?
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?
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?
Have you ever noticed the patterns in car wheel trims? These questions will make you look at car wheels in a different way!
This challenge invites you to create your own picture using just straight lines. Can you identify shapes with the same number of sides and decorate them in the same way?
This problem invites you to build 3D shapes using two different triangles. Can you make the shapes from the pictures?
What is the greatest number of counters you can place on the grid below without four of them lying at the corners of a square?
Can you each work out what shape you have part of on your card? What will the rest of it look like?
Can you work out what shape is made by folding in this way? Why not create some patterns using this shape but in different sizes?
Make a flower design using the same shape made out of different sizes of paper.
Can you work out what shape is made when this piece of paper is folded up using the crease pattern shown?
Have a go at making a few of these shapes from paper in different sizes. What patterns can you create?
For this task, you'll need an A4 sheet and two A5 transparent sheets. Decide on a way of arranging the A5 sheets on top of the A4 sheet and explore ...
What are the next three numbers in this sequence? Can you explain why are they called pyramid numbers?
Can you split each of the shapes below in half so that the two parts are exactly the same?
This problem focuses on Dienes' Logiblocs. What is the same and what is different about these pairs of shapes? Can you describe the shapes in the picture?
Can you describe a piece of paper clearly enough for your partner to know which piece it is?
If you split the square into these two pieces, it is possible to fit the pieces together again to make a new shape. How many new shapes can you make?
Move four sticks so there are exactly four triangles.
Have you ever tried tessellating capital letters? Have a look at these examples and then try some for yourself.