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, ...

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 ...

You have likely played with the timeless game Spirograph at some point in your lifetime. It was a staple in every home when I was growing in Levittown. For those unfamiliar, it was a drawing game that ...

If you’re a child of the ’80s or ’90s, chances are you’ve spent hours tracing out intricate patterns using the pens and gears of a Spirograph kit. Simple as those parts may be, they’re actually a very ...

Who else remembers Spirograph? When making elaborate spiral doodles, did you ever wish for a much, much bigger version? [Fortress Fine Woodworks] had that thought, and “slapped a router onto it” to ...

Months ago, I observed a student drawing spiraling circles over and over on a sheet of notebook paper while participating in our class discussion. For some reason, I was reminded of an old toy my ...