Chemical Concept Teaching In High School Grade I Based On Advanced Organizer Strategy

The chemical concepts are the foundation of the chemical knowledge system,are also the focus and difficulty in the process of the chemistry learning.During the implementation of the course,a high proportion of students in high school grade I believed that there are too much chemical concepts in the compulsory module of chemistry textbook,and gradually they lost the confidence and ability to learn chemistry well.The high school chemistry teachers also felt that the teaching high school students is not easy at current.A chemical concept to say a few times still cannot understand for students.Ionic and redox reactions are the core concepts in the middle school chemistry concepts.Therefore it is a subject worth studying that the advanced organizer strategy as a breakthrough point for teaching and research is applied to chemical concept teaching in High School Grade I.In this thesis the present status,replying strategies for the applications of advanced organizer strategy to chemical concept teaching in High School Grade I are investigated,and the teaching designs and teaching practice for the ionic and redox reaction unit are accomplished to look for the effective strategy and method in the chemistry concept teaching.There are three aspects in this study:(1)literature research.First,the present situation of high school chemical concept teaching,the basic concept and function of the advanced organizers strategy are inspected by the research of literature.Further the advantages,the research achievements and existing problems for the advanced organizer strategy applied to chemical concept teaching are summarized for the current ionic reaction teaching research.(2)The advantages of the advanced organizer strategy is applied in the high chemical ionic reaction and redox reaction unit teaching to construct the design specifications of the chemistry teaching process under the advanced organizer strategy.And the teaching cases about the high chemical ionic and redox reaction unit are designed using the concrete connotation presented by Joyce about of advanced organizer strategy.(3)The effectiveness of advanced organizer strategy applied in the ionic reaction teaching of high school chemistry is studied taking the two parallel classes in the middle school of Xinhua County as the experimental class and the control class respectively,and further conducts its effectiveness analysis by the ionic reaction unit knowledge test for two classes and the questionnaire survey for experimental class.This research shows that the advanced organizer strategy can effectively improve the efficiency of student learning,help students understand the relationship between the concepts,promote students'learning interest,learning motivation and self-confidence.Therefore the advanced organizer strategy can be used as an effective strategy for the teaching of high school chemical concepts.