A set of lecture notes for a course on Geometry for high school teachers.
The notes, written in Dutch, cover various topics in classical
geometry, which are related to the geometry that is tought at dutch high schools.

The notes contain many interactive pictures (Geogebra applets).

MuPAD based applets for modular arithmetic used in courses for Linear Algebra, Cryptography and Elementary Number Theory.

GEONExT based Java Applet for visualization of linear independence.

MuPAD based applet for Linear Algebra.

MuPAD based applet for Linear Algebra

MuPAD based applet for matrix calculations.

MuPAD based applet for Linear Algebra (Gauss algorithm).

MuPAD based applet for Linear Algebra

GEONExT based applet visualizing the result of multiplying a matrix with a vector for 2 times 2 matrices.

GEONExT based applet for visualizing Linear Algebra (linear maps and bases).