The instruction is made in the form of "homepage-based digital presentation".
Contents are :
Essence, way of understanding, of a subject
Instruction design, instruction method
Mathematical subjects of which the elementary school mathematics consists
The contents displayed on the screen are the webpages, which are "presentation" version of the "self-learning" pages, and stored in the server.
Some pages include such materials as Shockwave movie, QTmovie, video streaming, sound, except for text, still image. -- By means of visualization, animation, mathematical subjects become easy to be understood, whence instruction itself becomes effecient.
Students can minutely and repetedly study, in the "self-learning" homepage, more of the contents presented in a lecture room