12. Event title:
Giant Drawing Machines: Bicycle Spirograph, Giant Pantograph
13. Description of the core message of your event and key topics to be covered (c.100 words):
Made from familiar materials, and reminiscent of Heath Robinson contraptions, my giant drawing machines demonstrate the magic of maths and mechanics in a fun, interactive way.
Bicycle Spirograph is the sawn-off back end of a scrap bike, adapted so people can draw 18 different 1.5-metre Spirograph patterns by rotating the bike around the crank. Each gear produces a different pattern.
Giant Pantograph is a two metre long body outlining machine, inspired by the Sketch-a-Graph toy. With it, pairs of people can draw each others' miniaturised silhouettes directly onto A4 paper.
Accompanying these machines is a Bike Cog Spirograph drawing activity and Paper Pantograph schools workshop. People will be able to draw small Spirograph patterns onto A4 paper using gear sprockets and laser-cut cogs, and children will learn how to make small cardboard pantographs.
14. Does the event have particular local relevance?:
15. If so, please indicate what this is:
Local schools can participate in the workshops.
16. How does your event relate to this year's theme of 'Making waves'?:
Spirograph patterns are actually polar sine waves (plotted around a central point rather than along a linear axis).