Terms of Service

Last updated: July 4, 2026.

Euclid's Workshopis a study companion for Book I of Euclid's Elements, published by Spearhead Analytica, LLC ("we," "us"). By using this website, you agree to these terms.

Using the site

The website is provided for personal and educational use. The interactive lessons, explanations, and proof challenges are free to browse. You may not resell, redistribute, or present the site's content as your own.

Purchased curriculum

Our downloadable teaching curriculum (lesson plans, worksheets, and answer keys) is sold through Gumroad, which acts as the merchant of record for every sale. When you buy a bundle, your purchase and payment are governed by Gumroad's terms in addition to these.

A purchase licenses one teacher. Print as many paper copies as the students you personally teach need. A parent teaching one child and a co-op leader teaching a class of twenty are both covered by a single purchase.

The licence does not extend to the PDF files themselves. Do not send, upload, or republish them for other teachers, parents, or students. Teaching several classes at once, or licensing for a whole school or program? Email hello@euclidsworkshop.com and we will work something out.

No warranty

The site and its materials are provided "as is," without warranties of any kind. We work hard to keep the mathematics accurate and the site available, but we do not guarantee that it will be error-free or uninterrupted.

Changes

We may update these terms from time to time. Continued use of the site after a change means you accept the revised terms.

Contact

Questions about these terms? Email us at hello@euclidsworkshop.com.

A project by Spearhead Analytica, LLC.