Study On The Construction And Application Of Intelligent Diagnostic System In Chemistry Exercises

In chemistry diagnostic teaching, it's significant to study students' problems solving obstacles. Relate to chemistry subject obstacles, the effective diagnosis and remediation in past literature research mostly based on case study methods. Researchers diagnose students' obstacles by virtue of deep interview, logical estimation and explanation could be gained after deep analysis. So it lags and then results in feedbacks and remediation not in time. To students, cognitive conflicts and knowledge limitation have been forgotten in some degree, so much as getting into training again and again.Selecting Particulate property's knowledge, we attempt to establish effective, furthermore fitting for many samples obstacles' diagnose system, study the influences of individual remediation to problems solving abilities of different students, conceive the network system of intelligent diagnose system, advise its teaching values.Use past research ways, conclusions of chemistry subject obstacles diagnose and remedial techniques for reference. In virtue of Broom's object classify theory, the theory of multiple intelligences, constructivism theory and programmed instruction theory. Establish research objects. Found intelligent diagnose model, which judge students' obstacles quickly resort to few test questions. Actualize remediation aimed at their error types. So student could answer the parallel questions correctly.Based on diagnose model, we build testing system. Select Particulate property from the nine-grade national chemistry curriculum criterion. Design three sorts of difficulties choices, which consult task analysis techniques, and authorize mistake types by options. Describe diagnostic reports base on mistake types, Set remedial exercises by the same difficulty and same knowledge features. Rectify the test system to be sure of the reliability and validity.We shall study and apply the intelligent diagnosis system. Resort of students representations of experimental group and control group. Analyze the system's effect on students' problems solving correctness and the remedial efficiency. We arrive at several conclusions. (1)The diagnosis system could enhance students' overall correctness of problems solving. (2)Remediation efficiency is different to students, which means the remediation efficiency of difficult or easy exercises is higher than normal ones. (3) The remediation efficiency of students with high cognition is alsohigher. (4)Students' problems solving correctness could not be improved if they were given diagnose report only and without remediation exercises.As follows, management functions of the intelligent diagnostic system based on web have been conceived, and the main date-bases have been constructed. Finally, the developmental tendency of the system has been put forward. Several profound thinking and further research subjects have been given.