PROBLEM TO BE SOLVED: To provide a teaching material suited to each learner, by judging an understanding degree of leaning of the learner. ;SOLUTION: A learner's computer 102 is provided with a teaching material requesting means 21 for requesting a teaching material, a teaching material display means 22, and a test answering means 23 for sending an answer of a test. An instructor's computer 103 is provided with a teaching material distributing means 31 for transmitting the requested teaching material, a teaching material data storage means 32, a teaching material selecting means 33 for selecting the corresponding teaching material, a learner's understanding degree information storage means 34 for storing the information on the understanding degrees of learning of each leaner, a distribution range limiting means 35 for permitting the distribution of a corresponding teaching data based on the information on the understanding degree of learning, a test result judging means 36 for judging an understanding degree of each learner based on the answer of the test, a teaching material utilization state judging means 37 for judging an understanding degree of each learner based on the utilization state of the teaching material, a teaching material re-composing means 38 for changing a teaching material composition for each learner based on the information on an understanding degree of learner, and an individual teaching material data storage means 39 for storing the re-composed teaching material data.;COPYRIGHT: (C)2000,JPO
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