PURPOSE: a kind of content providing learning knowledge and learning knowledge system and device are provided to requested knowledge search result as relevant knowledge type according to learning process, and provide searching method study previously/rear knowledge understands corresponding knowledge user as needed. ;A kind of CONSTITUTION: the content viewer of learning knowledge (110) learning knowledge and to have learned knowledge content be various visual types. A kind of learning knowledge level of learning knowledge search unit (120) search registration, the content of learning process data and learning knowledge. A kind of learning knowledge content packet administrative unit (140) packaging learning knowledge, and store in the storage unit (150). Access interface (130) provides communication protocol to access learning knowledge service platform (10). The learning knowledge service platform includes learning knowledge level, the content of learning process data and learning knowledge. ;The 2013 of copyright KIPO submissions;[Reference numerals] (10) learning knowledge service platform; Learning knowledge content providing device (100); (110) learning knowledge observer; (120) learning knowledge searching unit connects; Access interface (130) learning knowledge platform; (140) learning knowledge platform manages packet unit; (150) storage unit
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