Research On The Design And Practice Of Chemistry Teaching To Promote Students' Cognition Development In Junior Middle School

In chemistry teaching we should not only pay attention to the students' knowledge and skills,process and methods,emotional attitude and values of chemical literacy,more attention to the development of the students' understanding of accomplishment.While paying attention to the nature and connotation of the 3d target,we will try to improve the students' chemistry discipline.The teaching design and practice based on promoting the transformation of students' cognition and understanding development are the fundamental ways of improving the effectiveness of classroom teaching.Through literature retrieval,case design,questionnaire survey,teaching practice and other methods,this paper studies the teaching subject of the development of students' chemistry.The research contains the following sections:(1)To determine the direction of the research and to select the relevant research content by analyzing the course standards and relevant literature.This article selects the research contents from ninth grade chemical(I),three topics are: the molecules and atoms,the law of conservation of mass and combustion and fire fighting.(2)To establish the subject of chemistry knowledge dimension or level,and on this basis for each known dimension or hierarchical design questionnaire survey questionnaire before and after the test and can promote the chemical understanding of the development of the teaching design.(3)To analyze the level of chemical cognition in the students according to the defined chemical cognition dimension or level of analysis.From the point of the results of the authors teaching practice,the students have good chemistry at the microscopic and quantitative level,at the same time experimental classes students related chemical understanding of "combustion and extinguishing" also has the development of students is better than the contrast class.(4)Through the design of the teaching,students' chemistry have known each other for better development,the research stage of compulsory education teaching to promote the development of students' knowledge chemical has played a certain reference function.