| 摘要 |
PURPOSE: An electronic book content, editor tool, and exclusive viewer about elementary school text are provided to increase the interest of leaning by learning an exclusive viewer. CONSTITUTION: The degree of difficulty is designated as an authoring tool about the content of the electronic book content according to the designation range(2,(2)-1). The electronic book applies the various degree of difficulty. An exclusive viewer has a level self studying. Data in a central communication server is automatically updated to the exclusive viewer. |
