In the context of the new college entrance examination,the new curriculum,and the new textbook(hereinafter referred to as "the three new ones"),the author explores the current situation and research on the implementation of the problem chain design in the three new reforms under the large unit teaching of high school history through a large number of questionnaires and visits to front-line teachers and students,with a view to improving the effectiveness of history classroom teaching.The new textbooks are different from the previous textbooks in that they are written in general history,which has a large volume and highlights the structure of "outline",and teachers have a large teaching task and a variety of knowledge points.The use of problem chains in large-unit teaching can solve many problems in the history curriculum more effectively,and will certainly attract attention in the future.This paper analyzes two specific teaching cases of modern Chinese history,and proposes that current teaching can be done in refining unit themes,setting themes for large-unit teaching objectives,and designing teaching contents.A random questionnaire survey of teachers and students in different grades of high school shows that most teachers and students have a positive attitude toward the teaching of large-unit problem chains,but the design of problem chains based on large-unit teaching in classroom teaching is not complete.This is mainly due to the lack of reasonable teaching tasks in schools and the realistic pressure of exam-oriented education,the lack of teachers’ practice in large-unit teaching,and the weak awareness of problem chain design.In this paper,we also take the May Fourth Movement and the Birth of the Chinese Communist Party as an example to design the problem chains under the large unit teaching of high school history.First of all,the design of teaching is based on students’ learning conditions and the five core qualities of history under the high school history curriculum standards;secondly,the concepts of large units,mind maps,and modern educational technology are integrated into the classroom to enrich teaching methods;finally,the problem chains should be designed to grasp the important and difficult points of teaching contents,and the textbook contents should be integrated and organized based on large units,and the designed problem chains should be placed in the real Finally,when designing the problem chains,we should grasp the important and difficult points of the teaching contents,and organize the textbook contents based on the large unit,put the designed problem chains in the real history classroom to test the effect,and optimize and improve them according to the classroom teaching effect,in order to have a certain boost effect on the design of problem chains under the large unit teaching for high school history teachers through real cases. |