The Influences And Strategies Of Teaching Contents’ Presentation Modes To Students Comprehensions To Core Knowledge

The dissolution equilibrium of insoluble electrolyte is a new knowledge in teaching material, and it is the importent part of middle school chemistry curriculum. As a key and difficult point,it has very importent significance and position in chemistry teaching in high school.This section used to be a pat of ionization theory of inorganic chemistry in the university and it is too theoretical,so most of the students entounter obstacles when the learn this part and teachers also will entounter obstacles in the actual teaching.Under the background of new curriculum,teachers shouid supplement、expurgate and process teaching material contents necessarily and creatively cccording to curriculum standards and the actual needs of students,and organize and present teaching contents with efficient and reasonable ways.Inder to improve the effectiveness of the teaching of the dissolution equilibrium of insoluble electrolyte,this research mainly include the following work:In the process of basic reseach, the author first expounds currnt research situation of the teaching of the dissolution equilibrium of insoluble electrolyte, in order to understand the existing problems in the teaching of this part. Secondly, this research expounds currnt research situation of presentation strategy and presentation mode of chemical teaching material content and chemical teaching content.Finally this research expounds relatrd research abroad of diverse presentation of teaching contents.In the process of supporting reseach, the author first defined five core concepts that they are chemical teaching content、presentation、presentation of teaching content、core konwledge and understanding. Secondly, this reseach dissolve the core konwledge of the dissolution equilibrium of insoluble electrolyte into five types cccording to students’cognitive level and teaching materials’ writing ideas.Finally, the presentations of teaching conent are preliminary generalized into three broad categories. Based on the thesis reseach mode is constructed.In the process of core reseach, the author first use effective presentation of teaching content to conduct the instructional design of the dissolution equilibrium of insoluble electrolyte. Secondly, the author design the questionnarie of this study and impiement it.Through the analysis of questionnaire results, the instructional design of the dissolution equilibrium of insoluble electrolyte using effective presentation of teaching content using effective presentation of teaching content is effective.It not only makes teachers consciously and purposefully design teaching,provide guidance for diverse teaching content,but also break the emphasis and difficulties in teaching. This design also help students solve problems in learning the dissolution equilibrium of insoluble electrolyte.