Billy's class had a robot called Fred who could draw with chalk held underneath him. What shapes did the pupils make Fred draw?
Draw three straight lines to separate these shapes into four groups - each group must contain one of each shape.
What is the total area of the four outside triangles which are outlined in red in this arrangement of squares inside each other?
This practical problem challenges you to make quadrilaterals with a loop of string. You'll need some friends to help!
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?
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?
What is the greatest number of squares you can make by overlapping three squares?
A group activity using visualisation of squares and triangles.
Can you cut a regular hexagon into two pieces to make a parallelogram? Try cutting it into three pieces to make a rhombus!
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.
Make a flower design using the same shape made out of different sizes of paper.
What shape has Harry drawn on this clock face? Can you find its area? What is the largest number of square tiles that could cover this area?
Looking at the picture of this Jomista Mat, can you decribe what you see? Why not try and make one yourself?
How many different cuboids can you make when you use four CDs or DVDs? How about using five, then six?
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 ...
How many DIFFERENT quadrilaterals can be made by joining the dots on the 8-point circle?
Imagine a 3 by 3 by 3 cube made of 9 small cubes. Each face of the large cube is painted a different colour. How many small cubes will have two painted faces? Where are they?
Can you cut up a square in the way shown and make the pieces into a triangle?
What shape is made when you fold using this crease pattern? Can you make a ring design?
This problem invites you to build 3D shapes using two different triangles. Can you make the shapes from the pictures?
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?
Players take it in turns to choose a dot on the grid. The winner is the first to have four dots that can be joined to form a square.
Exploring and predicting folding, cutting and punching holes and making spirals.
Here are more buildings to picture in your mind's eye. Watch out - they become quite complicated!
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.
A game has a special dice with a colour spot on each face. These three pictures show different views of the same dice. What colour is opposite blue?
Make a cube out of straws and have a go at this practical challenge.
How many different triangles can you make on a circular pegboard that has nine pegs?
Seeing Squares game for an adult and child. Can you come up with a way of always winning this game?
Imagine a 4 by 4 by 4 cube. If you and a friend drill holes in some of the small cubes in the ways described, how many will not have holes drilled through them?
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?
What are the next three numbers in this sequence? Can you explain why are they called pyramid numbers?
Why do you think that the red player chose that particular dot in this game of Seeing Squares?
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 fit the tangram pieces into the outlines of the telescope and microscope?
This article looks at levels of geometric thinking and the types of activities required to develop this thinking.
Can you fit the tangram pieces into the outlines of the chairs?
A game for 2 players. Given a board of dots in a grid pattern, players take turns drawing a line by connecting 2 adjacent dots. Your goal is to complete more squares than your opponent.
Can you fit the tangram pieces into the outlines of the rabbits?
Which of these dice are right-handed and which are left-handed?
Investigate how the four L-shapes fit together to make an enlarged L-shape. You could explore this idea with other shapes too.
Can you fit the tangram pieces into the outline of Granma T?
Can you fit the tangram pieces into the outline of the clock?
Can you arrange the shapes in a chain so that each one shares a face (or faces) that are the same shape as the one that follows it?
Can you fit the tangram pieces into the outline of the playing piece?
Can you fit the tangram pieces into the outlines of Wai Ping, Wu Ming and Chi Wing?
An extension of noughts and crosses in which the grid is enlarged and the length of the winning line can to altered to 3, 4 or 5.
Reasoning about the number of matches needed to build squares that share their sides.