Hi, I enjoy teaching math at the lower secondary school. Most of my applets are based on the dutch books we use in school. The greatest part consists of randomized exercises that help students improve their algebra skills. I also love playing electric guitar (Fender Stratocaster) in a rockband with some other teachers of my school. The thing I like about GeoGebra is that it does something good for the world by being free and that so many volunteers contribute to this idea.