problem
Favourite
Growing rectangles
Age
11 to 14
Challenge level
What happens to the area and volume of 2D and 3D shapes when you
enlarge them?
problem
Favourite
Factorising with multilink
Age
14 to 16
Challenge level
Can you find out what is special about the dimensions of rectangles you can make with squares, sticks and units?
problem
Favourite
Perception versus reality
Age
14 to 18
Challenge level
Infographics are a powerful way of communicating statistical information. Can you come up with your own?
problem
Favourite
Chances are
Age
14 to 16
Challenge level
Which of these games would you play to give yourself the best possible chance of winning a prize?
problem
Favourite
The better choice
Age
14 to 16
Challenge level
Here are two games you can play. Which offers the better chance of winning?
problem
Favourite
Partly painted cube
Age
14 to 16
Challenge level
Jo made a cube from some smaller cubes, painted some of the faces of the large cube, and then took it apart again. 45 small cubes had no paint on them at all. How many small cubes did Jo use?
problem
Favourite
Which is bigger?
Age
14 to 16
Challenge level
Which is bigger, n+10 or 2n+3? Can you find a good method of answering similar questions?
problem
Favourite
Which list is which?
Age
14 to 16
Challenge level
Six samples were taken from two distributions but they got muddled up. Can you work out which list is which?
problem
Favourite
Kite in a square
Age
14 to 18
Challenge level
Can you make sense of the three methods to work out what fraction of the total area is shaded?
problem
Favourite
Three cubes
Age
14 to 16
Challenge level
Can you work out the dimensions of the three cubes?
problem
Favourite
CD Heaven
Age
14 to 16
Challenge level
All CD Heaven stores were given the same number of a popular CD to sell for £24. In their two week sale each store reduces the price of the CD by 25% ... How many CDs did the store sell at each price?
problem
Favourite
In a box
Age
14 to 16
Challenge level
Chris and Jo put two red and four blue ribbons in a box. They each pick a ribbon from the box without looking. Jo wins if the two ribbons are the same colour. Is the game fair?