Design And Practice Of Junior Middle School Chemistry Teaching Based On Advanced Learning ——Taking "Air" Unit As An Example

Advanced learning is to describe the way students learn knowledge from simple to deep.The third grade is the beginning of students’ systematic learning of chemistry.How to make students effectively master more and fragmented chemical knowledge in classroom teaching is a problem that every educator thinks about.Advanced learning theory can undoubtedly provide a solution to this problem.It can help teachers understand the thinking development path of students in learning core concepts and accurately judge the level of students,so as to ensure the efficient and orderly progress of the classroom.Taking the unit "the air around us" in the first volume of grade 9 as an example,the author divides the advanced level of learning,integrates the unit teaching with the advanced level of learning,carries out the unit teaching design,and takes the lesson "oxygen" as an example to carry out the teaching design and practice.It provides a new direction and thinking for the research of advanced learning,and also provides front-line teachers with ideas and methods for teaching the unit of "the air around us".This paper will discuss the teaching design and practice based on the concept of advanced learning from five parts:The first part mainly introduces the background of the topic,and defines the significance and purpose of this research.By analyzing the research status and achievements at home and abroad,this paper discusses the feasibility and innovation of this research.The second part defines the advanced learning theory and unit teaching,and defines the nearest Development Zone and Addie model used in the research.Part Ⅲ: building "air" unit learning advanced.Firstly,by analyzing the curriculum standards,it is determined that this unit focuses on the core concept of "material determines nature" and carries out research in the three dimensions of "air composition","oxygen property" and "oxygen production".Secondly,through questionnaire survey and high school entrance examination analysis,combined with the suggestions of front-line teachers,it is determined that the starting point and end point of advanced learning,Divide the intermediate and advanced levels according to the knowledge level.Finally,based on the divided learning level,the measurement questionnaire is developed,and the "air" unit level combined with theory and demonstration is obtained after adjustment according to the results.Part Ⅳ: carry out practical research by combining advanced learning with teaching,develop the unit teaching design process according to the unit teaching design steps and advanced learning concept,and select the oxygen course as an example to develop teaching cases for teaching practice in the experimental class,and select the control class with similar cognitive level to use the traditional teaching method.After the study of the "air around us" unit,the achievement degree of each level of the two classes is compared through the questionnaire,and it is concluded that the teaching design based on advanced learning can promote students’ knowledge mastery.The fifth part summarizes this research and puts forward some suggestions for teaching practice:（1）reasonably divide the class hours and appropriately change the order of teaching contents;（2）Attach importance to the integration of "teaching evaluation";（3）Build a suitable teaching situation and multiple teaching methods in parallel.