| Exercises,as an organic part of the textbook,have lots of functions,such as introducing knowledge,consolidating knowledge and applying knowledge.In order to make better use of these functions,effectively improve students' mathematical thinking,and improve the efficiency of the practice lesson,secondary development of the original textbook exercises is needed.However,in actual teaching,textbook exercises play roles of supporting,which are always ignored by teachers.To improve the situation,teachers should be aware of the importance of secondary development of textbook exercises,and using development techniques and strategies to develop textbook exercises under the guidance of relevant theories.In this way,teachers can arouse the vitality of the class.In order to verify the effectiveness of teaching with textbook exercises of secondary development,this paper uses teaching experiments to verify the selection.Fourth grades students of a primary school in Changsha are selected as the research object.The students of this class were randomly divided into experimental group and control group.In the course of the experiment,I went through pre-experiments,pre-experimental reflections,formal experiments,and data processing and analysis to verify the hypothesis proposed in this article: teaching with textbook exercises of secondary development can improve students' math performance.Through the above research,the author found that although the conclusion that " Teaching with textbook exercises of secondary development can improve students' math performance " had yet to be further verified,the teaching effect of the experimental group was indeed better than that of the control group.After the verification,the author combines the strategies related to the secondary development of exercises that are worth learning from,and reflects on own experience and problems in the research process,and puts forward five suggestions for the secondary development of textbook exercises: Firstly,the secondary development of textbook exercises should be conducted under the guidance of hierarchical goals.Secondly,the secondary development of exercises is based on the needs of students.Thirdly,the secondary development of exercises is based on the intention of textbook exercises.Fourthly,the secondary development of textbook exercises should use reflection as a driving force for regeneration.Fifthly,the secondary development of textbook exercises should use the exercise resource library as a platform.Last but not least,the secondary development of the exercises can use the evaluation system as the strengthening mechanism.The author hopes that this research can arouse the teachers' attention to the secondary development of textbook exercises and provide teachers with some references and suggestions,and also contribute a modest force to the theoretical research related to "secondary development textbooks". |