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).

We present a set of lecture notes covering the basic mathematics that students at the Eindhoven University of Technology have to know.

These lecture notes are available in pdf form for printing, and as webpages (XML, html) containing various applets for interaction.

This is work in progress!

This video explains why the geometric series 1/2 + 1/4 + 1/8 + ... converges using an elementary argument. The video is meant to be preparatory materials for students to view before the discussion of geometric series takes place in a class room. The video finishes with an intriguing example.