Can you split each of the shapes below in half so that the two parts are exactly the same?
Can you describe a piece of paper clearly enough for your partner to know which piece it is?
Move four sticks so there are exactly four triangles.
Can you work out what shape is made when this piece of paper is folded up using the crease pattern shown?
Have you ever tried tessellating capital letters? Have a look at these examples and then try some for yourself.
Have a go at making a few of these shapes from paper in different sizes. What patterns can you create?
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?
Use the lines on this figure to show how the square can be divided into 2 halves, 3 thirds, 6 sixths and 9 ninths.
Paint a stripe on a cardboard roll. Can you predict what will happen when it is rolled across a sheet of paper?
Can you make the birds from the egg tangram?
What is the greatest number of squares you can make by overlapping three squares?
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?
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 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?
Make a flower design using the same shape made out of different sizes of paper.
Use the three triangles to fill these outline shapes. Perhaps you can create some of your own shapes for a friend to fill?
How many triangles can you make on the 3 by 3 pegboard?
Can you cut up a square in the way shown and make the pieces into a triangle?
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?
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.
What shape is made when you fold using this crease pattern? Can you make a ring design?
How many different cuboids can you make when you use four CDs or DVDs? How about using five, then six?
Can you visualise what shape this piece of paper will make when it is folded?
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?
Looking at the picture of this Jomista Mat, can you decribe what you see? Why not try and make one yourself?
Exploring and predicting folding, cutting and punching holes and making spirals.
Make a cube out of straws and have a go at this practical challenge.
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?
This problem invites you to build 3D shapes using two different triangles. Can you make the shapes from the pictures?
Can you make five differently sized squares from the tangram pieces?
What is the smallest cuboid that you can put in this box so that you cannot fit another that's the same into it?
Reasoning about the number of matches needed to build squares that share their sides.
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.
Using a loop of string stretched around three of your fingers, what different triangles can you make? Draw them and sort them into groups.
Watch the video to see how to fold a square of paper to create a flower. What fraction of the piece of paper is the small triangle?
Make a chair and table out of interlocking cubes, making sure that the chair fits under the table!
Investigate the smallest number of moves it takes to turn these mats upside-down if you can only turn exactly three at a time.
If you count from 1 to 20 and clap more loudly on the numbers in the two times table, as well as saying those numbers loudly, which numbers will be loud?
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?
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 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?
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?
Follow the diagrams to make this patchwork piece, based on an octagon in a square.
Arrange your fences to make the largest rectangular space you can. Try with four fences, then five, then six etc.
Watch this "Notes on a Triangle" film. Can you recreate parts of the film using cut-out triangles?
Can you predict when you'll be clapping and when you'll be clicking if you start this rhythm? How about when a friend begins a new rhythm at the same 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?
Ideas for practical ways of representing data such as Venn and Carroll diagrams.