International Slide Rule Championships - ISRC
Hosted by ISRM and participating Slide Rule Collector Groups

Mission: To increase the interest in slide rules and numeracy throughout the world, to add excitement and friendly competition between member organizations by rewarding the slide rule prowess and math competency of individual slide rule collectors, students, and members of engineering associations, to increase the spirit of camaraderie amongst the collector communities, and to increase the membership of the respective national organizations.

As a secondary benefit, competitors will be become more knowledgeable and may be more willing to teach a slide rule seminar in their respective home towns, thereby recruiting younger members to the organizations.

Thirdly, this is supposed to be a FUN event in order to increase the enjoyment of owning and using a slide rule!

Finally, The medals are provided FREE by ISRM with support from the Oughtred Society, to any organization willing to host an ISRC contest.

The first ISRC contest was administered by Rose Suarez, teacher of Mathematics and Research at Half Hollow Hills HS in Half Hollow Hills, NY. The winners (in the left column) show off their ISRC medals. Two students tied for 1st and three tied for 2nd. They were sent individual medals after the competition.

The most recent ISRC contest was challenged by Kristen Fouss's Pre-calculus class at Anderson HS in Cincinnati, Ohio using slide rules provided by ISRM's Slide Rule Loaner program. The Gold and Silver Medalists proudly show off their medals. With sufficient advanced warning, ISRM will supply ribbbons to match the school's (or national) colors instead of the non-country specific maroon and white.

Downloads (PDF's):

ISRC Current Rules and Procedures (1 MB)

ISRC Practice Problem Set PPS-1 (300KB)

The Official Contest Problem Sets will have the same problem arrangements as the Practice Set, but will have the constants changed. The administratrator of the contest will be sent one of the official problem sets by email once an event is planned.

The basic operations may be studied at ISRM's on-line Slide Rule Course or may be downloaded as a seminar in PDF form at:

Slide Rule Seminar (4.9MB)

Volunteer to be an Administrator!

If you wish to volunteer as an administrator to host the ISRC in your local, just Email the curator with the details (date and location) and I'll send out a set of medals. Upon request, Medals will be custom made using the language of the host country.

3 participants (minimum) = 1 Gold medal
4-6 participants = 2 medals (Gold and Silver)
7 or more participants = 3 medals (Gold Silver and Bronze)

If your organization wishes to have 7" x 9" plaques instead of medals I'll make up a set for $17.00 USD each (which is my cost) plus shipping, sent to anywhere. You will need to make a Paypal donation to ISRM using the button below to cover the cost of plaques.

If you wish to support this program, by making a monetary donation, each medal set plus shipping around the world costs us about $20.00 USD. Thank you!

Questions? Call Mike at 303-921-8709.


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