Divide a rectangular piece of paper in five pieces of equal area. You only have a pair of scissors at your disposal, but you are allowed to make straight folds to guide you.
Scroll down for a solution to this problem.
Solution

Note that this solution can easily be generalised to a division in an arbitrary number of equal-area pieces.
Poem
Origami
Fold a paper in squares
So you’ll make some new shape
To be a good origamifolder
You must fold in proper order
A crane of paper to offer
It can also be a tool for maths and geometry
Children can built their own world and theorie
Folding paper or leather
In flowers
