IOCW delivers new expanded use for Open Course Ware (OCW). It generates new ecosystem of knowledge. Its's users experience the ecosystem of OCW contents at easy input. This expanded i. Plot system supports association retrieval created by Naoko Tosa. Searching method is essential function for any OCW system. As its's users enter any preferable word in searching field, related curious and related words and recommended OCW and subjects are interactively displayed with diversity and creative expression. Such searching action is intuitive and and makes it into a meaningful, intelligence and even humorous experience for users. Moreover, its's users can discover unexpected subjects that have never been imagined before. These could be reflecting unconsciousness subject of self-interest. In conclusion, this system delivers users new interesting theories that may have never been considered before. This deepens users understanding and expands their own curiosity and related areas of possibilities. © 2011 IEEE.