Working systematically

problem
Olympic logic

Age

11 to 16

Challenge level

Can you use your powers of logic and deduction to work out the missing information in these sporty situations?
problem
Nutrition and cycling

Age

14 to 16

Challenge level

Andy wants to cycle from Land's End to John o'Groats. Will he be able to eat enough to keep him going?
problem
Magic letters

Age

11 to 14

Challenge level

Charlie has made a Magic V. Can you use his example to make some more? And how about Magic Ls, Ns and Ws?
project
Troublesome triangles

Many natural systems appear to be in equilibrium until suddenly a critical point is reached, setting up a mudslide or an avalanche or an earthquake. In this project, students will use a simple simulation game to investigate the properties of such systems.
problem
The games' medals

Age

5 to 7

Challenge level

Can you see who the gold medal winner is? What about the silver medal winner and the bronze medal winner?
problem
Crossing the town square

Age

7 to 11

Challenge level

This tricky challenge asks you to find ways of going across rectangles, going through exactly ten squares.
problem
Stage 5 cipher challenge

Age

16 to 18

Challenge level

Can you crack these very difficult challenge ciphers? How might you systematise the cracking of unknown ciphers?
problem
Building with longer rods

Age

7 to 14

Challenge level

A challenging activity focusing on finding all possible ways of stacking rods.
problem
Building with rods

Age

7 to 11

Challenge level

In how many ways can you stack these rods, following the rules?
problem
More plant spaces

Age

7 to 14

Challenge level

This challenging activity involves finding different ways to distribute fifteen items among four sets, when the sets must include three, four, five and six items.