Korean government aims to implement SMART education nationwide, so it is planning many ways to provide digital learning contents. There are some ways of distributing digital contents, and each way has its own characteristics. Edunet is a nationwide system for providing educational resource. Cyber Home Learning System is a regional service which offers supplemental learning materials. E-textbook provides electronic textbooks which are actually used at learner's real class. Digital Textbook uses the latest smart device and technology. Each approach has advantages and disadvantages so it needs to choose a different spreading method depending on the e-learning environment. And through the modularization of contents, it needs to recycle digital contents. [For the full proceedings, see ED562127.]