Abstract
We developed a feedback system of leaning strategies based on models created by using data mining technology which is applied to the data obtained from high school students. After trial use of this system, we evaluated the system from the point of view as follows. a.Validity of the models. b.The effectiveness of metaphors built into the system. c.Subjective evaluation from users. The results were as indicated below. (a) Validity of the models was verified, because the difference of academic ability estimated from the models was observed in the data obtained from monitor test. (b) The signal metaphor which represents the achievement levels of learning strategies was turned out to be effective, because the length of the time spent to read the explanation of leaning strategies differed according to the color of signal, while the direct road metaphor which represents the order of learning strategies was understood by nearly half of the students. (c) Some users insisted the animations used in the system were too long, but the evaluation as a whole system was favorable.
