| "Structure and Properties of Substances","Chemical Reaction Principle" and"Organic Chemistry Foundation" are all the essential core basic contents in the middle school chemistry curriculum,which are indispensable to the formation of the core literacy of chemistry discipline.Material structure knowledge helps students understand what is matter,its origin,its nature and structure,and the important role of scientific and technological means in the development of scientific theory."Structure and Properties of Substances" in "General Senior High School Chemistry Curriculum Standards(2017 edition)has changed from elective course to selective compulsory course.That is to say,in the module of "Structure and Properties of Substances" of"Chemistry Curriculum Standards for Senior High Schools(Experiments)",only science students are required to choose their subjects,while in the "Chemistry Curriculum Standards for Senior High Schools(2017 Edition)",students who choose chemistry as the subject of college entrance examination must take compulsory examinations,which obviously improves the requirements for teachers and students.However,the current situation of offering the course "Structure and Properties of Substances" in Yunnan Province is not ideal.Most teachers and students think that the content of the course is abstract and difficult to understand and study.There are still many problems in the course of implementation.However,in recent years,the reference rate of Yunnan Province’s "Structure and Properties of Substances" is gradually increasing.Therefore,under the background of the upcoming comprehensive curriculum reform and the guidance of "General Senior High School Chemistry Curriculum Standards(2017 edition)",more attention should be paid to the in-depth study of the content of "Structure and Properties of Substances" module.Based on the theories of classification of educational objectives,SOLO classification,constructivism,this research adopts the methods of literature research,comparative study and quantitative analysis.Through the analysis and study of thecurriculum standards,textbooks,and college entrance examination questions of the module "Structure and Properties of Substances",Based on the analysis results and interviews with teachers,puts forward the teaching suggestions of "material structure and nature" and carries out teaching practice.By comparing the curriculum depth and breadth required by the content of the curriculum standard,it is concluded that the curriculum breadth of the "Structure and Properties of Substances" module of"General Senior High School Chemistry Curriculum Standard(2017 edition)has increased,but the curriculum depth has decreased.Through the analysis of textbooks,it is concluded that the curriculum standards and the compilation of textbooks are mutually complementary and consistent.Based on SOLO classification theory,the ability structure of "Structure and Properties of Substances" is analyzed.It is concluded that the difficulty of selecting "Structure and Properties of Substances" is moderate,and the foundation and ability are still emphasized in the examination.Practical research shows that in the teaching of "Structure and Properties of Substances",teachers should take the concept of "structure decides nature" as their purpose,help students understand the core knowledge of "Structure and Properties of Substances" and clarify several relationships between "Structure and Properties of Substances",pay attention to grasping the depth and breadth of teaching content,and carry out "quality-based" teaching so as to promote teachers’ better teaching and harmony.Students learn better. |
