Key Curriculum Press owns the copyright for the lessons from Geometry Labs: Angles and The Ten-Centimeter Circle.
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 Geometry Labs, Zome Geometry, and The Algebra Lab: Middle School.
- 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
