With the introduction of the core literacy of the subject,the simple "Memorization" and "understanding" of knowledge points "one by one" can no longer meet the current teaching needs.The new teaching pays more attention to students’ comprehensive application of knowledge and development of ability in continuous and coherent learning,which requires that teaching design should be integrated into an organic whole with holistic thinking and a holistic perspective.Understanding by Design(UbD)advocates starting from expected learning results and prioritizing evaluation over teaching activities,aiming to help students understand concepts and knowledge as a whole and improve knowledge transfer ability.It can be found that the UbD model provides a new path to meet the current educational needs.Firstly,this study uses literature analysis method to sort out relevant literature and books,summarizes the research status of UbD model and unit teaching at home and abroad,understand the current research achievements and shortcomings,defines the "UbD model" and other related concepts,and analyzes from constructivism theory and other theories to provide theoretical support for this study.Secondly,questionnaire survey is used to investigate high school mathematics teachers,to understand the current situation and deficiencies of high school mathematics unit instructional design and the understanding and application of high school mathematics teachers on reverse unit instructional design,so as to provide data support for the research.Thirdly,this paper analyzes the feasibility of reverse unit teaching design of high school mathematics based on UbD mode theoretically,and summarizes four instructional design principles based on UbD mode.Based on these principles,this paper puts forward the UbD model-based reverse unit teaching design process of high school mathematics.Finally,using the educational experiment method and interview method,the teaching design is carried out by taking the "Equation of Straight line and Circle" as an example of high school mathematics of A version of People-oriented education,and the teaching practice is carried out.After the practice,the teaching effect is tested by the content test of "Equation of straight line and circle" and the teacher interview,and then the problems existing in the teaching practice are sorted out and analyzed,and the implementation suggestions are put forward.Through the above research,the following conclusions are drawn:(1)The teaching design of high school mathematics reverse unit based on UbD model is feasible and effective in front-line teaching.In the process of instructional design,the three stages of the UbD model can be divided into five links: clarifying the organizational unit,determining the unit objectives,developing assessment tasks,designing the learning experience,and dividing the unit lesson hours,including twelve aspects for design.(2)The reverse unit teaching design of high school mathematics based on UbD mode provides a new idea for teachers to carry out teaching design,which is conducive to the change of teachers’ concept and the improvement of their professional ability.(3)The reverse unit teaching design of high school mathematics based on UbD mode has obvious advantages compared with traditional teaching design,which is helpful to stimulate students’ learning enthusiasm and improve students’ academic performance. |