Start with a triangle. Can you cut it up to make a rectangle?
Can you work out how to produce different shades of pink paint?
How much of the square is coloured blue? How will the pattern continue?
Can you find an efficent way to mix paints in any ratio?
Can you find a way to turn a rectangle into a square?
How can visual patterns be used to prove sums of series?
These secondary problems have not yet been solved. Can you be the first?