How long is the paper in a toilet roll?

A simple experiment where you can think about units of length, estimation of length and how can so much paper fit on a still quite small roll.

1. Let the children write their name on a piece of paper that is then attached to its own stick.
2. Draw a starting line.
3. Let the children put the stick down in the ground where they think the paper will run out.
4. Roll out the paper starting from the starting line.

The roll will probably roll longer than the kids guessed.

NB! Check that you have sufficient space to roll it out before you start to roll it with the children. It’s quite a stretch on a full roll!