| Heavy academic load at primary and secondary school stage is an issue of social concern.As the “double reduction” policy is released,academic load of students is reduced.However,existing various problems cause increasing anxiety about university enrollment pressure from students and parents.New course standard implementation has defined the course concept based on key competence and has put forward higher requirements for course education teaching quality.Mathematics review class of junior middle school is to improved comprehensive ability and develop core quality,but low efficiency of many review courses is contrary to the education reform.Therefore,under the background of “double reduction” policy,how to improve the mathematics review class effectiveness and develop key competence is required to be studied by the majority of educators.Firstly,in the paper,the document analysis method is used to refine core concepts of mathematics review class,mathematic strategies,and teaching effectiveness,and sort out the literature about teaching strategies for mathematics review class at home and abroad.Based on existing research,in the paper,based on the field interview,the mathematics review strategy based on mathematical literacy is built to improve mathematics review class effectiveness.Secondly,determining theory basis and teaching principle provides the theoretical support for strategy development,i.e.,constructivism,multiple intelligence theory,Gu Lingyuan’s variant teaching theory,targeted,novelty,student-subject,and feedback principle.For every theory and principle,cases are explained,and operational methods are provided for readers.Thirdly,based on above education theory and principle,teaching strategies are as follows: firstly,through determining big-unit teaching goals and “deduction –summary-deduction” overall teaching,big-unit design strategies are implemented,and students are promoted to form general concept of research knowledge contents.Secondly,transverse,longitudinal,and overall Mind map is used to sort out knowledge and to network and systematize point-like knowledge,thus building overall unit framework.Thirdly,from terms of learning conditions,teaching goals,teaching problems,and teaching activities,in the paper,hierarchical design is conducted,starting point of the design is provided for the teaching,and different development of students is improved.Fourthly,teaching content is analyzed,conceptual variation and process variant construction based on core knowledge and learning conditions are conducted,and the knowledge essence is improved in a spiral way.Fifthly,in overall teaching process,many ways are raised in the paper: rich assessment ways,dimensions and subjects,various assessments for students,supplementing various teaching strategies,and promoting overall development of students.Comprehensive application of above teaching strategies has important theoretical significance and practical value for improving mathematics review class effectiveness.Finally,this paper proposes system application of above various teaching strategies,cases design of unit review class and special review class of quadratic function,which has proposed targeted and effective suggestions for all teachers.Through in-depth analysis of students’ classroom and after-school homework,classroom cooperation and communication,interviews with students after class and other resources,we can clearly see that the teaching effectiveness of mathematics review has been improved.On this basis,the author reflects on the shortcomings of the research and prospect of the next research direction. |