Every story and comment from the Hacker News API, in a layout borrowed from 2001.
A comment on Let's remove Quaternions from every 3D Engine. Parent comment
https://en.m.wikipedia.org/wiki/Geometric_algebra
https://en.m.wikipedia.org/wiki/Clifford_algebra
For teaching geometric algebra, there are curricula and textbooks available...
http://geometry.mrao.cam.ac.uk/home/introduction-to-ga/
https://arxiv.org/abs/1205.5935v1
http://www.faculty.luther.edu/~macdonal/GA&GC.pdf
http://assets.cambridge.org/052148/0221/sample/0521480221WS....
http://geometricalgebra.org/downloads/ga4cs_toc.pdf
https://www.amazon.com/dp/0792355148/
This looks a bit too high-level to inform my undergraduate teaching, but certainly I could learn something from this.
https://en.m.wikipedia.org/wiki/Geometric_algebra
https://en.m.wikipedia.org/wiki/Clifford_algebra
For teaching geometric algebra, there are curricula and textbooks available...
http://geometry.mrao.cam.ac.uk/home/introduction-to-ga/
https://arxiv.org/abs/1205.5935v1
http://www.faculty.luther.edu/~macdonal/GA&GC.pdf
http://assets.cambridge.org/052148/0221/sample/0521480221WS....
http://geometricalgebra.org/downloads/ga4cs_toc.pdf
https://www.amazon.com/dp/0792355148/