Research On The Theory And Practice Of Instructional Design Based On The "Four Understandings"

With the reform of the way ordinary high school education is promoted,how to implement core literacy and return to the original face of mathematics education has become a hot spot in the education industry,and teachers’ understanding of mathematics,teaching,students’ understanding,and technical understanding directly affect the efficiency and quality of teaching.In the first-line teaching,the teaching method of"one definition,three attentions,several examples,and a large number of exercises"cannot exert the inherent power of mathematics,in order to improve the quality of teaching,the connotation analysis of"four understandings" is carried out to obtain more specific operational strategies,and combined with the teaching of the concept class of"Quantitative Product of Vectors",it is studied.First of all,taking the current lesson as the background,the root cause of the inefficiency of mathematics classroom teaching is analyzed,and the importance of"four understandings" is proposed to explain the significance of this research,and by consulting a large number of literature to make relevant discussions on the "four understandings",analyze the dialectical connection between them and core literacy,and obtain a specific teaching operation strategy based on the "four understandings",named:UbT model(Understanding before Teach).Secondly,taking the lesson "Quantitative Product of Vectors" as an example,the new lectures of two front-line teachers were observed and recorded,the current situation of this lesson in front-line teaching was understood,and the after-class analysis was conducted,pointing out the necessity of teaching from the perspective of understanding.Finally,based on the new design of this lesson under the UbT mode,the educational experimental method is used to put the teaching design into practice,and the learning effect of the students is evaluated in combination with the questionnaire method,and the following conclusions are drawn:"Quantitative Product of Plane Vectors" is a good carrier for cultivating students’core literacy,and the UbT model can be well integrated into teaching design;teaching based on "four understandings" can help students understand the concept of quantitative product,and can better reveal the essence of mathematics,trace the origin of teaching,and improve the efficiency of classroom teaching,so as to implement core literacy.