Cases Study On Teaching Practice Of Chemistry In Junior High School Under The Concept Of STSE

STSE is an educational thinking and philosophy that combines science,technology,society,environment and chemistry teaching closely,it associates theory and life flexibly,and STSE is one of the Education for sustainable development.Chemistry at the stage of compulsory education is the foundation of high school chemistry,STSE is implemented from the perspective of junior middle school chemistry teaching,so that the chemistry curriculum is based on real life,the main purpose is to cultivate the STSE ability of students and open the door to chemistry in sustainable development education.Based on the STSE education concept,this subject has discussed the implementation strategy of each teaching links in the junior middle school chemistry classroom,and has conducted junior middle school chemistry teaching designs and cases study to meet the needs of modern education.First of all,some related literatures or educational documents and the Contents of junior middle school chemistry textbooks what is about STSE has been reviewed and integrated,the content of exam questions in some regions within the past five years has been statistically analyzed,the students'STSE ability has been investigated at the same time.Secondly,the STSE education concept is combined with the chemistry classse,the implementation strategy of incorporating the STSE education concept into the introduction of new courses,content lectures,classroom summaries and the exploration process of chemical experiments has been discussed,after-school chemical exercises were designed combined with the COVID-19 of epidemic as the background.Thirdly,based on the teaching strategy of STSE education concept,we have fully tapped the chemistry teaching materials around students and designed catalysis of Mn O₂in oxygen production from H₂O₂solution,diamond,graphite and C₆₀,effects of CO₂on life and environment and metal materials based on STSE education chemistry teaching designs,the junior and third grade students are regarded as the main body of classroom teaching,and the way to implement STSE education concept in junior middle school chemistry classroom has been discussed in the real situation After the teaching practice,the students were surveyed about the STSE ability by the way of homework after class,combined with classroom observation and feedback from students after class,the survey data has been statistically analyzed and the conclusions of the thesis have been summarized.The practice of chemistry teaching in junior high school combined with the STSE educational concept,First of all,it can implement the curriculum objectives of developing chemistry literacy,then inspire students to think in science,technology,society and environment,finally,improve students'learning effectiveness.Through teaching practice,some conclusions are obtained:1.Introduction of new courses,teaching of new courses,classroom summary,chemical experiment exploration process and exercise training can be used as the implementation approaches of STSE concept;2.It can improve students'thinking ability on the connection between chemistry knowledge and real life,the cognition of chemistry and science history,the connection between chemistry and technology application,and the consciousness of chemistry and environmental protection;3.It is conducive to improving students'active participation in class and stimulating their interest in learning chemistry;4.It can increase the opportunities for students to work in groups and improve their ability to integrate knowledge and cooperate.The teaching model guided by the STSE concept has broken through the traditional teaching of"taking the textbook as the world"and changed of"taking the world as the textbook".curriculum based on real life so as not to deviate from the reality of social life,it is conducive to cultivating students'STSE ability,developing scientific spirit and social awareness.