Being collaborative

problem
Favourite

A Chance to Win?

Age

11 to 14

Challenge level

3 out of 3

Imagine you were given the chance to win some money... and imagine you had nothing to lose...
game
Favourite

Diamond Collector

Age

11 to 16

Challenge level

1 out of 3

Collect as many diamonds as you can by drawing three straight lines.
problem
Favourite

What's It Worth?

Age

11 to 16

Challenge level

1 out of 3

There are lots of different methods to find out what the shapes are worth - how many can you find?
problem
Favourite

Square It

Age

11 to 16

Challenge level

1 out of 3

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.
game
Favourite

Vector Racer

Age

11 to 16

Challenge level

1 out of 3

The classic vector racing game.
problem
Favourite

Multiple Surprises

Age

11 to 16

Challenge level

1 out of 3

Sequences of multiples keep cropping up...
$Countdown fractions$

problem
Favourite

Countdown Fractions

Age

11 to 16

Challenge level

1 out of 3

Here is a chance to play a fractions version of the classic Countdown Game.
problem
Favourite

Parallelogram It

Age

11 to 16

Challenge level

1 out of 3

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 parallelogram.
problem
Favourite

Same Length

Age

11 to 16

Challenge level

2 out of 3

Construct two equilateral triangles on a straight line. There are two lengths that look the same - can you prove it?
problem
Favourite

Product Sudoku

Age

11 to 16

Challenge level

2 out of 3

The clues for this Sudoku are the product of the numbers in adjacent squares.