What is spirograph: A geometric drawing device that creates intricate patterns using gears, developed by Denys Fisher in 1965 and now a Hasbro trademark. Why it matters: Spirographs teach geometry, ...

With inspiration from the famous Spirograph Girl, primary school pupils aged 7 to 11, kids can create autumn themed Spirograph designs to win a Spirograph bundle for themselves and their school, plus ...

Wikipedia describes Spirograph as a “geometric drawing device that produces mathematical roulette curves of the variety technically known as hypotrochoids and epitrochoids.” While that all sounds very ...