You may download and duplicate these materials for your non-commercial "fair use". Be sure to credit the authors and copyright holders.
I own the copyright for almost everything else on the site.
(Jointly with Anita Wah in the case of Algebra: Themes, Tools, Concepts)
I grant you permission to download and duplicate any of it for your non-commercial use, as long as you credit the author(s) and reference this Web site.
Thanks!
--Henri Picciotto
Frequently Asked Question
If you want permission to use some of my materials as part of a teacher training workshop, here is the general answer.
If the material is from one of the books whose copyright is currently held by a commercial publisher, I believe the rule of thumb about fair use is that you can duplicate up to ten percent of the pages. This applies to Zome Geometry.
- If I hold the copyright, (as is the case for most of the material on this site,) you have permission to use as much of it as you want, under these conditions:
- - You do not sell the materials,
- - You credit me as the author, and direct participants to this Web site
- - You let the participants know that they are bound by the same conditions
