Teaching Design & Practice Of Link-up Of Chemical Knowledge Points In Junior & Senior Middle School

New course standards require heuristic inquiry teaching,inspiring students to think based on existing knowledge mastered by students,motivating enthusiasm and initiative of students to achieve teaching foals of middle schools.How to link up knowledge points of junior middle school chemistry with those of senior middle school well,effectively improve teaching effect and quality of senior middle school chemistry is a problem each senior middle school chemistry teacher must faces,receiving high attention of extensive teaching staff all the time.In this article,through interviews or questionnaires to the students and the teachers from Ruijin City junior high school,the author gets to know that Ruijin City junior high school of teaching materials have been using the "chemistry" book of People's Education Publishing House version in the last five years,and there have been the phenomenon that students find it difficult to cross the the fault of knowledge.Teachers of junior high school chemistry and teachers of senior high school chemistry are different from each other.Junior teachers have never taught senior high school chemistry,and senior teachers have never taught junior high school chemistry,either.4 typical knowledge points in inorganic substance and property,3 in organic substance and property,There are 10 typical theoretical knowledge points of the knowledge aspect,which are to be compared with PEP edition "chemistry" of junior high school(the first volume),(the second volume)and the knowledge point fault of the content of the textbook in the first edition,comparison and to be discussed on how to do the connected teaching,2 complete teaching cases,10 faultage and link-up content analysis cases were designed,which obtained good teaching effect through teaching practice.Through the teaching practice,students' interest in learning chemistry improved significantly.The ability of learning chemistry of most students has been greatly improved,and so does their performance in chemistry.