I teach mathematics at all levels, from basic algebra for school students to calculus for university students. The students can choose the course to be either a homework-aid, or revision on the learnt material, or previewing on some new knowledge that they will need, or even some more adavanced stuff. Not only will I keep the student practicing with various and but not tedious task, but I will also teach how to tackle and think mathematically. I could also teach physics for school level.