TIME TO HIT RESET. “A line is just a circle that passes through a point at infinity.” Grant Sanderson on the 3Blue1Brown channel. This video on quaternions should be the gold standard model for all maths teaching, a true work of visualization genius that takes a complex subject and makes it totally engaging. Throw out your children’s maths texts. This is how maths can be taught!
https://youtu.be/d4EgbgTm0Bg