* A piece of chart paper or thick sheet from a printed magazine.
* A pair of scissors.
* A pencil.
* Draw a circle of 14 cm radius on the paper.
* Draw another circle of 11 cm radius within the first circle.
* Mark slits between the two circles with a pencil at equal distances.
How to play
* Press one slit towards the front and the other towards the back. Blow air on to it. The wheel slides forward without toppling down.
* Try checking, the wheel will move if the toy is not circular.