Research On The Teaching Design Of High School Mathematics Unit Under UbD Theory ——Take "The Equation Of The Conic Section" As An Exampie”

With the implementation of the "General High School Mathematics Curriculum Standards（2017 Edition 2020 Revision）",mathematics teaching has paid more and more attention to the cultivation of the core literacy of the subject,and the unit teaching design has become a breakthrough in cultivating the core literacy.Ub D theory is a relatively mature unit teaching design theory abroad,advocating "promoting understanding through design",placing evaluation design before activity design,following the concept of integrating teaching,learning and evaluation,providing a new path for unit teaching design.How should we study the teaching design of high school mathematics unit under the Ub D theory? The specific research process is as follows:Firstly,through the literature research method,the related literatures of Ub D theory,unit teaching design and conic section are sorted and analyzed to understand the research status and lay a theoretical foundation for the follow-up research.Secondly,the questionnaire survey method and interview method were used to understand the current situation of the unit teaching design of the front-line teachers.The results showed that the front-line teachers did not have a high degree of understanding of the unit teaching design,especially the evaluation of the unit learning,and the process of the unit teaching design was unclear.And the implementation of unit teaching design in provincial and municipal key high schools and county-level general high schools is uneven.The main reasons for the above problems are that teachers’ theoretical foundation is not solid,school-related training is not in place,and teachers have many teaching tasks and lack time to study unit teaching design.Therefore,theoretical guidance should be strengthened,and a standardized process should be constructed,so that teachers can follow the rules.The teaching design of high school mathematics unit under the Ub D theory should follow the following four principles: the principle of understanding first,the principle of evaluation first,the principle of systematic planning and the principle of promoting teaching;Design and achieve evaluation,select learning content,plan learning activities,and divide class time tasks.According to this process,the unit teaching design of "Equation of Conic Section" is carried out,and the teaching elements of each link are systematically planned.The teaching design of high school mathematics unit under Ub D theory is explained in detail,and the high school mathematics unit under Ub D theory is preliminarily explained.The practicality of instructional design.Finally,by interviewing three high school math teachers with rich teaching experience,it is found that the process has certain operability and can be applied to front-line teachers to prepare lessons and write lesson plans.High,due to time constraints and teaching pressure,teachers are not very willing to implement this.In order to better meet the needs of the new curriculum reform,front-line teachers can improve their adaptability to unit teaching design from several aspects,such as creating situational tasks,optimizing assessment design,strengthening summary and reflection,and attaching importance to teamwork.