Live Problems - Stage 3, 4 & 5

Secondary Toughnutslive

Age 11 to 18 Challenge Level:

These secondary problems have not yet been solved. Can you be the first?

Squaring the Rectanglelive

Age 14 to 18 Challenge Level:

Can you find a way to turn a rectangle into a square?

Mixing Paintslive

Age 11 to 14 Challenge Level:

Can you work out how to produce different shades of pink paint?

Mixing More Paintslive

Age 14 to 16 Challenge Level:

Can you find an efficent way to mix paints in any ratio?

Diminishing Returnslive

Age 11 to 14 Challenge Level:

How much of the square is coloured blue? How will the pattern continue?

Vanishing Pointlive

Age 14 to 18 Challenge Level:

How can visual patterns be used to prove sums of series?

Triangle Transformationlive

Age 7 to 14 Challenge Level:

Start with a triangle. Can you cut it up to make a rectangle?