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 ...

The 250 free Spirograph kits provided by Playmonster UK was snapped up within 72 hours of launch and over 500 schools downloaded the free educational Spirograph themed resource packs, created in ...

[Tuchman] starts with a quick proof-of-concept using an actual plastic Spirograph toy to make sure it isn’t a totally unworkable idea. Unsurprisingly, the plastic is too flexible to give a ...