Winding Mechanisms with Cotton Reels

The introduction is the same as for cotton reel winding mechanisms. The Winding Mechanism is made from a cylinder of Plaster of Paris suspended on a rubber band within the bottom of a plastic bottle. As a string is pulled out it winds up the mechanism and as you let the string go the bottle scampers and jumps across the table. Due to the length of time to make them, I normally assemble these beforehand. The students choose what they want to decorate the bottle as, e.g. frog, ladybird etc. They use crepe paper then add ears, eyes, mouth, feathers, legs, tails, and antennae and so on. They often end up looking very colourful and striking.