Strategy Based On Effective Language Of Instruction In Junior High School Teachers In Algebra Class Video Analysis

With the implement of reform in our basic education, it becomes an issue to how to improve the validity in mathematics classroom. Video case is a powerful tool to evaluate mathematics teaching impersonally. In aid of video case, this paper focuses on mathematical teaching language in junior high school, classifies the teaching language in terms of improving the validity of teaching language, some conclusion and analysis were made. With the comparison of teaching language in algebra classroom of different type teachers, some strategy was put forward. This paper is helpful to improve the teaching of mathematics in junior high school and teaching ability of mathematical teachers.In chapterⅠ, significance of this paper was expatiated, status quo in mathematical teaching was summarized. Presently, mathematical teachers look down on teaching language, so the teaching language is urgent to be improved. In this chapter, some thinking about improve the actuality of mathematics teaching in junior high school was depicted based on the requirement of curricula reform.In chapterⅡ, the classification, purpose, role and characterization of teaching language were summarized. Tow famous video cases were analyzed, one was TIMSS and another was made by Jiansheng Bao, and some inspirer was depicted. Finally, three relative theories:construction theory, society construction theory and cognition theory were depicted briefly.In chapterⅢ, some methods about study mathematical teaching language validity in junior high school classroom were compared, such as questionnaire, spot observation, data coding. Among these methods, video case is the best one. The course of video case was introduced detailed. We think it is a proper method that from spot REC-translation to word-coding-analysis-comparison and conclusion.In chapterⅣ, four algebra teaching course of four types teachers were analyzed by the above method with three indices. Firstly, common comparison of teaching language and students' answers was made. And then, further comparison was depicted, such as teaching course, the relationship of pause of teacher with students'answer, in order to reflect the real instance of the four teachers in algebra classroom.In chapterⅤ, based on the results of chapter IV, some strategy were put forward from several points of view:how to use state, quiz, elicitation language, focus diversiform language, adaptive and moderate teaching. This paper is used for reference to improve the teaching of mathematics in junior high school.