topology

This is a simple exercise but may be both motivating and confounding.

For children who have not played with Mobius strips before, start by introducing the idea of the strip - here are a few ways:

1) ask the child, 'is there a way to make this strip of paper have only one side?'

or

2) make one without explanation by simply cutting a strip of paper, twisting it, and taping the ends. Ask your child to draw a line along the shape as far as they can.