Study On The Cultivation Of The Teaching Strategies Of Chemical Particle View Of Junior Middle School Students

The concept of chemical particles view,which is one of the core conceptions of chemistry learning,is a deep understanding from the perspective of micro particle material and the nature of the interaction.The construction of middle school students' chemical particle view is not only the teaching requirement of the new chemistry curriculum standards,but also the important guarantee for students to learn chemistry.This paper includes six parts as follows:(1)In the introduction,we introduced the source of the subject,the significance of cultivating the students' chemical particles and main contents of the research.(2)We summarized the research progress on the definition of the connotation of the particles,the investigation of the present situation of the particles view and the research on the cultivating strategies of the students' chemical particles view.(3)To understand the construction of their chemical particles view,the questionnaire survey on the situation of the chemical particle view of Anshan second middle school students in grade three was carried out.(4)On the basis of the analysis of students' mastery of the chemical particle view,we proposed three teaching strategies for cultivating junior middle school student's chemical particle view.(5)Taking the teaching materials of junior high school chemistry textbook published by people's education press as an example.(6)Conclusion.Through the design and implementation of the case teaching,the effectiveness of the teaching strategies of junior middle school chemistry particles view is verified.It was showed that the students in the experimental class,who were taught to use above mentioned strategies,demonstrated strong ability of using knowledge about chemical particle view,cultivate students' concept of particle strategy case proposed by teaching about the concept of knowledge particles using ability,and could solve some chemical problems very well from the view of the chemical particles view.The results indicated that the effectiveness of the proposed teaching strategies in this thesis on cultivating chemical particle view of junior high school students is obvious,and it played important role in the construction of students' chemical particles view.