An ingenious construction system which stimulates children's creativity while it teaches simple mechanics. Children will have fun exploring ways to combine the colourful variety of cog pieces. The interlocking square plates are fixed to a solid base to provide stability. The interlocking cogs create exciting movement in a spectacular chain reaction. Some of the cogs are decorated with a stimulating colourful design which improves even more once you turn the handle. Age 3 +. See also D7 - Georella.