The Leavens And Countermeasures For Effective Teaching Of Chemical Concept In The Middle School

How to get the best teaching effect in the shortest possible time is the core of the chemistry classroom teaching reform. In order to achieve this goal, our chemistry teacher must update teaching concept and understand the teaching materials and the students as deep as possible.The teaching of chemical concept has basic and guiding effects. The teaching efficiency of chemical concept improves the chemistry teaching and the realization process of teaching goals.Chemical concept can be classified to three forms:(1) concrete concept (2) definition concept (3) skilled concept. For the students,different type of chemical concept has different learning procedure,so the teaching process is also different.According to constructivism throry, cognietive theory the characteristics of chemical concept, the influence factors of chemical concept teaching is complex and diversified. The mainly two aspects are from students and teachers. The impacts from students including:(1) The emotional materials are not enough.(2) The students have used iproper methods.(3) The impacts of preconceptions. The impacts from teachers including the teachers, teaching philosophy,teaching strategies and teaching skills.Under the guidance of the efficient teaching theory and the the results of the survey, effective teaching strategies of chemical concept can be summarized as:(1) Providing enough emotional materials.(2) Help students use scientific congnitive methods.(3) Use the teaching strategies for the preconceptions.(4) Teaching the students to learn chemical concept in chemical words.