"It is clear that Karen loves her mathematics and that she enjoys sharing this passion for the subject with her students. I have used her for both mathematics units that are part of my engineering degree and will be using her again for the next one. As I attend university via distance education, it could be thought that I would suffer from not attending tuts on campus. The ability to use Karen to fill this void has enabled me to excel in my current engineering mathematics subjects and adequately prepare for my future engineering studies. I have generally been able to grasp the basics of the subject but Karen has cemented the required concepts whilst also showing me how to approach the tougher questions. I would strongly recommend her use for any student wishing to excel in mathematics."