Lecture slides and notes
GeoGebra visualisation: Parametric vector form of a line
GeoGebra visualisation: Parametric vector form of a plane
YouTube: Tesseract animation
YouTube: 4D Rubik's Cube
GeoGebra visualisation: Projection of a vector on another vector
7 into 28
Counting stick, Ishango bone
Tally stick explanation, and one from Germany
GeoGebra visualisation: Polar form of a complex number
Eulerzimmer
Jia Xian Triangle (a.k.a. Pascal's Triangle)
Pascal's Triangle
Calculus Rhapsody
Google matrix
Engineering applications of linear algebra
Computer graphics, genes, economics
Nine Chapters of the Mathematical Art
Nine Chapters of the Mathematical Art
Augmented matrix from Nine Chapters of the Mathematical Art
Counting rods, and a picture
Best hat