The National Council of Teachers of Mathematics owns the copyright for several articles I wrote or co-wrote for NCTM journals. I share them here with NCTM's permission. You may download and duplicate these materials for your non-commercial "fair use", but you should be sure to credit the authors and the copyright holder.
The Project SEED materials are copyrighted by Project SEED. Contact me if you need to get in touch with them.
I own the copyright for almost everything else on this site and on my blog. (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 website or blog.
See the Creative Commons website for the details and small print of this license, including guidelines for derivative works.
Questions? Send me e-mail.
Thanks!
--Henri Picciotto
Professional Development Workshops
If you want permission to use some of my materials as part of a teacher training workshop, here is the answer.
If the material is from a book 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 almost all 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 website
- - You let the participants know that they are bound by the same conditions
- Have a great workshop!
