| With the deepening of basic education reform in China,the subject core literacy has gradually become the goal of classroom teaching,and "how to cultivate people" has become a key issue that needs to be studied and explored at present.In the classroom of primary and secondary schools in Our country,most teachers adopt the mode of teaching and practicing,focusing only on students’ memory of knowledge symbols,ignoring the development of students’ own ability and thinking.How should teachers organize teaching,help students to engage in learning with a positive attitude,learn to think and express with critical vision in the learning process,and achieve "deep learning" ? This is an important entry point for deepening curriculum reform and implementing core literacy.In this paper,literature analysis,investigation,case analysis and other research methods are adopted to sort out the relevant literature on deep learning and trigonometric function teaching at home and abroad.The current situation of trigonometric deep learning in senior high schools is deeply investigated,the questionnaire data and interview content are analyzed,and the teaching strategies and specific teaching cases for promoting trigonometric deep learning are proposed based on the existing research results.The main achievements of this paper are as follows:Firstly,using NSSE-China deep learning subscale for reference,this paper investigates and analyzes students’ "trigonometric function" learning,and finds that there are certain problems in students’ "trigonometric function" deep learning,which are mainly reflected in five aspects :(1)lack of attitude and motivation;(2)Weak understanding and critical ability;(3)Rarely connecting old and new knowledge and constructing knowledge network;(4)Lack of reflection and sorting ability;(5)Lack of awareness of migration and application.Secondly,through the interview,it is found that teachers can accurately grasp the status and role of trigonometric functions,and can sum up the difficulties of students in learning trigonometric functions.But teachers have yet to apply deep learning to the classroom.Thirdly,aiming at the problems existing in the investigation and the current situation,an analysis of the causes from two aspects: students and teachers,and then from two aspects: students and teachers put forward the corresponding optimization strategy,in the hope of learning attitude and motivation,understanding and criticizing in depth,contact and construction,integration and reflection and migration and application of five dimensions was improved.Fourthly,according to the current situation of students’ trigonometric function learning and the course standard,two typical lessons are selected from the trigonometric function unit for teaching design,which shows how to improve students’ literacy and ability under the guidance of deep learning theory. |