How could we order ourselves from heaviest to lightest, without using scales?
First idea - throw some rope over the basketball hoop and haul people up to find the heaviest and lightest
(but we decided that wouldn't be safe).
Second idea - jump off something high and the person who lands first is heavier
Guess what - we landed at the same time!
We talked about balance scales, and someone thought about using a seesaw.
So off we went to the play-park just down the road.
We had solved the problem!
What other ideas could we have tried?