Research On Chemistry Review Teaching In Senior High School From The Perspective Of Big Concept

The Chemistry Curriculum Standards for General Senior High Schools(2017edition,revised in 2020)emphasizes the concept of discipline as the core and promotes knowledge structure.The discipline concept can reflect the essence of the discipline and is the key concept,principle or method with lasting transfer value.Organizing a round of high school chemistry review by using the discipline concept can not only achieve a more accurate and profound understanding of chemical knowledge,but also realize the integration of chemical knowledge,so as to improve the efficiency of the round of chemistry review in the college entrance examination and lay a solid knowledge foundation for the college entrance examination.Through literature review and integration of theories related to grand concept,this study constructed a teaching design mode of grand concept review in senior high school chemistry from the perspective of grand concept review according to the characteristics of grand concept review in senior high school chemistry,which is divided into the following five steps:(1)determine the grand concept of the subject and sort out the concept system;(2)Divide review topics and review units;(3)to determine the review teaching objectives;(4)Develop review teaching activities;(5)Design evaluation feedback.Take the "REDOX" topic of high school chemistry review as an example to present and explain.Finally,the teaching experiment was conducted to explore the implementation effect of the teaching design mode of round review in senior high school chemistry from the perspective of big concept.Knowledge evaluation and knowledge structure chart were used to examine students’ knowledge mastery to judge the effectiveness of the mode.Questionnaire survey was used to understand students’ acceptance and satisfaction.Results show that with big concept under the perspective of high school chemistry round reviewing teaching design mode of organization,to enhance the students’ chemistry review effect,help students understand and master the knowledge,and helps to form the knowledge system,improve chemical performance,at the same time students for the teaching design model of acceptance and satisfaction is higher,From review interest,review method and review effect have positive influence.