Move four sticks so there are exactly four triangles.
Can you make the birds from the egg tangram?
Paint a stripe on a cardboard roll. Can you predict what will happen when it is rolled across a sheet of paper?
Can you split each of the shapes below in half so that the two parts are exactly the same?
What is the greatest number of squares you can make by overlapping three squares?
Have a go at making a few of these shapes from paper in different sizes. What patterns can you create?
Can you work out what shape is made when this piece of paper is folded up using the crease pattern shown?
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?
Have you ever tried tessellating capital letters? Have a look at these examples and then try some for yourself.
Use the three triangles to fill these outline shapes. Perhaps you can create some of your own shapes for a friend to fill?
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?
Can you describe a piece of paper clearly enough for your partner to know which piece it is?
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 lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.
This practical problem challenges you to make quadrilaterals with a loop of string. You'll need some friends to help!
What are the next three numbers in this sequence? Can you explain why are they called pyramid numbers?
Make a cube out of straws and have a go at this practical challenge.
This was a problem for our birthday website. Can you use four of these pieces to form a square? How about making a square with all five pieces?
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?
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 ...
Can you visualise what shape this piece of paper will make when it is folded?
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.
Exploring and predicting folding, cutting and punching holes and making spirals.
In how many ways can you fit two of these yellow triangles together? Can you predict the number of ways two blue triangles can be fitted together?
Looking at the picture of this Jomista Mat, can you decribe what you see? Why not try and make one yourself?
Make a flower design using the same shape made out of different sizes of paper.
Can you cut up a square in the way shown and make the pieces into a triangle?
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?
This problem invites you to build 3D shapes using two different triangles. Can you make the shapes from the pictures?
These pictures show squares split into halves. Can you find other ways?
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?
Use the tangram pieces to make our pictures, or to design some of your own!
In this town, houses are built with one room for each person. There are some families of seven people living in the town. In how many different ways can they build their houses?
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.
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?
This practical problem challenges you to create shapes and patterns with two different types of triangle. You could even try overlapping them.
Make a chair and table out of interlocking cubes, making sure that the chair fits under the table!
How many different cuboids can you make when you use four CDs or DVDs? How about using five, then six?
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?
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?
What shape is made when you fold using this crease pattern? Can you make a ring design?
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?
Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.
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 your own double-sided magic square. But can you complete both sides once you've made the pieces?
Here is a version of the game 'Happy Families' for you to make and play.
Follow these instructions to make a three-piece and/or seven-piece tangram.
Can you create more models that follow these rules?
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.
Here are some ideas to try in the classroom for using counters to investigate number patterns.