Junior High School Students' Chemical Phase Heterogeneity Reasons And Solutions

Alternative frameworks affect the learning of new knowledge and effective teaching.It is difficult for the students to learn from the daily life and the study in the past,and it is difficult to change the original ideas through ordinary classroom study.This is easy to cause the students often make mistakes and teachers can do nothing embarrassing situation.In this paper,based on the literature review,through the investigation and research and action research,this paper studies the causes and solutions of junior middle school students' chemistry alternative frameworks.First of all,we choose the junior high school students in grade three to investigate and study,through the questionnaire survey and data processing,we find that there are some typical differences between students and analyze their causes.Based on the theory of constructivism and the theory of conceptual change,this paper puts forward the strategies to change the students' alternative frameworks of chemistry.Based on the above,the paper designs the teaching design of the grade nine chemistry of "dispersion of the material in the water",and carries out the teaching practice in the Middle School of Shenyang.According to the above three part of the empirical research conclusion: some students have alternative frameworks in the junior middle school chemistry concept learning,the formation of alternative framework is mainly influenced by prior knowledge,life experience and thinking and other factors;alternative frameworks of students are stubborn and individual differences,which requires teachers based alternative frameworks exist in attention the students,guide students to realize their own alternative frameworks,finally,change the traditional teaching mode,the concept of change to guide students to alternative frameworks.In this paper,the junior high school students of different chemistry concept for students to learn the concept of chemistry,the effective teaching of teachers to provide some help,the modern teaching and the improvement of the ability of teachers and students are of great significance.