This is absolutely brilliant. It is a pedagogical skill a teacher can use to impart the specialized knowledge of maths.
http://www.mangahigh.com is excellent for its simplicity, interactivity and innovation. It is highly resourceful and attractive. I love it. My concern is just that when you use this style in the classroom, with every learner having their own computer, some students might seize the opportunity to visit sites which are irrelevant to what you are teaching.
Can you please suggest what to do when this happens?