Abstract
In recent years, there are lots of educational digital materials. But teachers often find there is a lack of useful and appropriate content when they want to use materials in a classroom. They want more educational contents to be able to circulate them. Educators should retrieve with a standardized metadata for seamless retrieval. So materials must be standardized. This study introduces Metadata Standards for educational resources (Dublin Core, LOM, SC36, and MPEG-7) Web sites with them, and the importance of co-operation between them.
