This is my effort to keep them alive, through exhibits, conferences and lectu- res where analog and mechanical calculators can be tested by the public. I think it is useless to teach maths without explaining how calculations were performed before the digital era, just up to 40 years ago: it would be like teaching history starting only from the Industrial Revolution. It takes just a few minutes to communicate the existence of a world before computers, a world where Man reached the Moon!
Displaying my collection I explain the most significant calculators. The minimum exhibit kit is easily transportable, but I can create a true museum exhibition, with educational aids and interactive simulations. Sometimes I add a brief panorama of the traditional methods of navigation and, to complete the history of ancient technologies, I can show a telegraph station, telephones, typewriters and anything else necessary to recreate an office of the era.
For a better vision of mathematics my exhibits aims to:
To avoid boredom I organize dynamic exhibits, focused in teaching how to use the instruments.
From 2008 I show every year at Cagliari Festival Scienza, an Italian science fair sponsored by the U.N.E.S.C.O., a brief history of computing. The opportunity to try the calculators has made the difference and I have always more than 1,500 visitors: an average of three shows per hour. No time to rest!
The best compliment I got from a group of young girls who advised everyone: "go to see the old computers, they are so cool". An unexpected success for a boring topic
Stand for calculators, slide rules and astro navigation
Was there life before computer? was one of 10 educational projects that
Minimum display of calculators and slide rules
Minimum display of nautic instruments
A rolling table to show the calculators
Children loves ancient calculators
Somebody write notes
Nomographs helps the boys to understand logarithm and slide rule
Incredible, many youngsters!
I need more than a strong voice ...
The Slide Rule Show is coming
Everybody's mad for the monkey
Explaining the history of computing
Youngs learn at the fly
At work with addometers and addiators
Many people makes photos!
A smile for the television
And in the end a "slipstick concert"
Nicola Marras 2008 - 2019
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