Being curious

problem
Favourite

Counting Cogs

Age

7 to 14

Challenge level

2 out of 3

Which pairs of cogs let the coloured tooth touch every tooth on the other cog? Which pairs do not let this happen? Why?
problem
Favourite

Method in Multiplying Madness?

Age

7 to 14

Challenge level

2 out of 3

Watch our videos of multiplication methods that you may not have met before. Can you make sense of them?
problem
Favourite

Three Neighbours

Age

7 to 14

Challenge level

2 out of 3

Take three consecutive numbers and add them together. What do you notice?
problem
Favourite

Ten Hidden Squares

Age

7 to 14

Challenge level

3 out of 3

These points all mark the vertices (corners) of ten hidden squares. Can you find the 10 hidden squares?
game
Favourite

Factors and Multiples Game

Age

7 to 16

Challenge level

1 out of 3

A game in which players take it in turns to choose a number. Can you block your opponent?
problem
Favourite

Fruity Totals

Age

7 to 16

Challenge level

1 out of 3

In this interactivity each fruit has a hidden value. Can you deduce what each one is worth?
problem
Favourite

5 by 5 Mathdokus

Age

7 to 16

Challenge level

1 out of 3

Can you use the clues to complete these 5 by 5 Mathematical Sudokus?
problem
Favourite

Xavi's T-Shirt

Age

7 to 16

Challenge level

1 out of 3

How much can you read into a T-shirt?
problem
Favourite

Baravelle

Age

7 to 16

Challenge level

2 out of 3

What can you see? What do you notice? What questions can you ask?
problem
Favourite

Pocket Money

Age

11 to 14

Challenge level

1 out of 3

Which of these pocket money systems would you rather have?