As a child my Spirograph was definitely a favourite toy so I was delighted to find this digital version, Inspirograph by Nathan Friend. Try altering the gears so that the fixed and rotating gear are the same size, or make one size a factor of the other, make the two sizes have a common factor, or not! Investigate. You can change the colours too and create a work of Art!
The Nrich problem ‘Making Maths: Planet Paths‘ challenges students to draw some planet paths using a Spirograph. In case there is no Spirograph to hand they give instructions for making a simple one.
Alternatively, try an online version. Try Spirograph on the Desmos Graphing calculator.
For GeoGebra fans there are various applets available, including this which allows colour changes.
From Mathiversity – see Online Spirograph where you can create, admire the gallery or read user Chiron’s essay which explains the workings of the Sprigoraph toy in an unusual way.
Reblogged this on Mathematics – Games and commented:
Play with the wonderful Spirograph!
OMG!! I was thinking about this not long ago and I could not remember the name of the game. It was one of my favorite game as a child ^_^
You and me both ioanaiuliana!