Application Research Of High School Chemistry Teaching Design Based On UbD Mode ——Take Organic Compounds As An Example

In recent years,it has become a hot research topic that is about discipline core quality and the cultivation of the core quality for discipline in the classroom teaching.Subject core literacy training is not only the core task of the education reform today,but also the main content of quality education and discipline.At the same time,times have changed and social demand for talents has quietly changed,which makes classro-om teaching reform imminent.Traditional instructional design can no longer fully meet the current teaching needs.Many front-line teachers and researchers try to integrate fresh blood into the existing classroom teaching.Ub D model is one of them,which leads to a series of questions,namely: is Ub D model conducive to the implementation of the core literacy of chemistry? Can it strengthen the effect of chemistry classroom teaching in senior high school? How to design teaching according to Ub D mode? Therefore,the author carry out relevant research and try to explore and solve the above problems.First of all,by consulting relevant literature and books,the author make it clear that Ub D mode is based on Ub D theory and uses systematic methods to plan the whole teaching.The ultimate goal is to achieve real understanding.It advocates unit as unit,emphasize big concept and the formation of a systematic knowledge system.Meanwhile,it adopts reverse thinking to design teaching and achieves a high degree of consistency through the three stages of “teaching,learning and evaluation”.Based on the above,it is preliminarily inferred that the teaching design under Ub D mode is conducive to implement of the core quality of chemistry subject and improve the effectiveness of chemistry classroom teaching in high school.Therefore,the macrothematic direction of this research is preliminarily defined,the research program is formulated,and the research content and ideas are determined.Secondly,based on the results of the high school entrance examination,the monthly examination results in March,classroom observation and consultation with teachers,two classes with little difference in overall level were selected in the first grade of the practice school,namely the experimental class and the control class.In addition,students of the experimental class and representatives of front-line chemistry teachers in different areas of the province were invited to fill in relevant questionnaires to understand the current situation of chemistry classroom teaching in senior high schools,students' interest in chemistry and their learning effects.Then the necessity and feasibility of applying Ub D model in high school chemistry teaching design are analyzed.Then,based on the questionnaire survey results,theoretical research,combined with the traditional teaching design,the construction of high school chemistry teaching design based on Ub D mode;And take "Organic Compounds" as an example to design the teaching of new lessons,experimental lessons and review lessons,and discuss and modify the designed teaching cases with the practice school teachers.Change is completed,experimental classes of Ub D mode of teaching design,that in comparative classes keep unchanged original teaching design.Most importantly,this study combines Grant Wiggins and Jay Mc Tighe's six dimensions of understanding with the cognitive process of "understanding" in Bloom's new classification of cognition to effectively evaluate understanding;Based on the initiative of students in completing the assessment task,clarity and accuracy of works or expressions,the students' understanding is divided into four grades: A,B,C and D,so as to accurately evaluate the students' understanding,which provides the possibility for teachers and students to obtain timely feedback.Finally,after a semester of practice,the effectiveness of Ub D model in senior high school chemistry classroom teaching is evaluated through the June test results of the experimental class and the control class,the evaluation test results of subject core literacy,the classroom evaluation and understanding scale,as well as the questionnaire survey on the changes of students' interest in chemistry and learning effect,and the recognition of the teaching design model.The results show that the scores of the experimental class on the subject core literacy evaluation test and the June test are higher than those of the control class,and the students' understanding degree of the experimental class is mainly in Grade A and grade B,and the students' subject interest and learning effect change positively.To sum up,high school chemistry teaching design based on Ub D mode can help students implement the core quality of chemistry and promote students to realize real understanding;It is also conducive to strengthening the effect of classroom teaching in senior high school and effective evaluation and understanding.In addition,this study constructs the idea of high school chemistry teaching design based on Ub D mode,applies it to the teaching design of three different course types,and provides case reference for its popularization and application.