Nets of a cube
You learn to see whether you can fold a net into a cube.
How to work it out
- Choose one square as the bottom.
- In your head, fold the other squares up.
- If two land in the same place, or a side stays open, it will not work.
Four squares in a row, with one above and one below.
- Choose the second square of the row as the bottom.
- Fold the two next to it up, and the last one becomes the lid.
- The ones above and below become the front and the back.
- Every side is used once: this makes a cube.
More examples
Six squares in a row.
After four squares around the bottom, the last two land in the same place: no.
Two rows of three, side by side.
That does not make a cube: some faces end up in the same place.