Films by Bruce and Katharine Cornwell

A short animated film providing a visual exploration of the Pythagorean theorem, and relating that to the algebraic expression of it. The film's heart, and real lesson, is the last section which hints at the joy mathematicians find in devising proofs and challenging themselves with new questions.

This is a digital transfer from a VHS scan of a 16mm print, so unfortunately it is not of prime quality. If anyone locates a 16mm print of this, please let me know. Original copyright by Bruce Cornwell; released under Creative Commons license by Eric Cornwell, 2014. For more please see Films by Bruce and Katharine Cornwell

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Films by Bruce and Katharine Cornwell

Eric Cornwell Plus

Bruce and Katharine Cornwell produced dozens of highly visual animated educational films between the late 1950s and the late 1970s. They started with traditional paper and cel animation, and moved into using computer animation in its infancy in the late…


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Bruce and Katharine Cornwell produced dozens of highly visual animated educational films between the late 1950s and the late 1970s. They started with traditional paper and cel animation, and moved into using computer animation in its infancy in the late 1960s. Much of the work is lost, but films will be posted here as they are found and prepared.

For more background please see bkcfilms.com and the Academic Film Archive of North America afana.org .

The copyrights to the films are now owned by sons Eric and Scott Cornwell who are releasing them under a Creative Commons license to encourage artists, educators, and others to give these images new life by reusing them in whole or in part in their own work. We request only the attribution "Includes film images originally produced by Bruce and Katharine Cornwell." Note that while the music is licensed for use in exhibiting the films in their complete form, we do not have authority to relicense it for other use, so the invitation to reuse elements from the films applies to the images only, except where noted.

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  • Megan Vieira

    Hi Eric, I'm wondering if you'll get these working again soon. I really want to show them to my calculus class

    by Megan Vieira

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