Подборка ссылок по геометрической алгебре. Можно рассказать школьникам про комплексные числа и кватернионы.
http://geometry.mrao.cam.ac.uk
Imaginary numbers are not Real http://geometry.mrao.cam.ac.uk/1993/01/imaginary-numbers-are-not-real-the-geometric-algebra-of-spacetime/
Lecture notes http://geometry.mrao.cam.ac.uk/2016/10/geometric-algebra-2016/
https://www.amazon.com/dp/0792355148/#reader_0792355148
http://geometry.mrao.cam.ac.uk/2007/01/geometric-algebra-for-physicists/
https://probablydance.com/2017/08/05/intuitive-quaternions/
https://news.ycombinator.com/item?id=14947065
http://www.math.umd.edu/~immortal/MATH431/
November 7th, 2020 by Борис Демешев