| In the face of the reform of the college entrance examination and the reform of new textbooks for senior high schools,the state has put forward higher requirements for the education mode of primary and secondary education,and the assessment of mathematics in senior high schools has changed from the knowledge level to the core literacy.The inquiry-based classroom teaching of "dominant-subject combination" supported by visual teaching resources is conducive to the cultivation of high school students’ core literacy of mathematics,and enables students to grow into people with independent thinking ability and innovation ability.Based on this,through a large number of literature research and long-term observation of the classroom,the author found that a large number of teachers in high school mathematics classrooms give lectures in the form of chalk and blackboard,but few classroom teaching forms are students’ inquiry under the guidance of teachers.Under the guidance of the theory of "Equal emphasis on learning and teaching",this paper conducts an in-depth analysis of the high school mathematics unit teaching supported by visual teaching resources,and proposes a technical roadmap for this research.The research on the teaching system of high school mathematics large unit teaching is from four aspects: preliminary investigation,visual teaching resource platform design,large unit teaching design,and teaching experiment.According to the model,taking high school functions as an example,the students’ learning in the function part was investigated and analyzed;and all 21 mathematics teachers in a high school were interviewed about "learning and teaching equally" and the situation of high school mathematics unit teaching.Through the analysis of questionnaires and interview results,it is found that teachers are not clear about the connotation of "equal emphasis on learning and teaching",the ability to use information technology in teaching is weak,and the tasks of high school mathematics courses are heavy;traditional teaching resources such as blackboards and PPT provided by mathematics teachers are difficult to integrate.The abstract mathematical knowledge is intuitively reflected,and both teachers and students are eager to have more visual teaching resources that can support students’ inquiry-based learning.In order to facilitate the production and sharing of high school mathematics visualization resources for teachers and students,this paper designs and develops a visualization teaching resource platform integrating GGB,Geometric Sketchpad and other tools.Create,share,and download;the platform re-divides resources by unit,which is more suitable for large-unit teaching;the authority of resource management is moved down to teachers in the lesson preparation group,which facilitates rapid updating of resources to meet the needs of teaching material reform;set thumbnails Search function,easy for students to query and so on.Under the guidance of theory,with the support of information technology such as visualization platform,and according to the description of the evaluation system of the college entrance examination,the design path of large-unit teaching is put forward around the core literacy of high school mathematics,the principles and goals of large-unit design.Relying on the large-unit teaching,the design process that pays equal attention to both teaching and learning is proposed,and four teaching design cases of power function,exponential function,logarithmic function and general trigonometric function are given in detail,and it is compared with the traditional classroom teaching mode of pre-class and class.Compare during and after class.The teaching is implemented under the guidance of teaching design,and two classes of the first grade were selected in a high school in Yunnan Province to conduct a one-semester empirical study.The empirical results,taking functions as an example,show that the large unit teaching of high school mathematics supported by the visual teaching resources proposed in this paper improves the students’ dominant position,changes the traditional teacher-centered teaching method,and effectively improves the students’ learning ability.grades,core competencies and the ability to apply information technology. |