As a branch of situational teaching,"mainline" teaching has the characteristics of situational coherence,advanced thinking and systematic knowledge.Applying "mainline" teaching to junior high school geography class can effectively cultivate students’ core geographical literacy.Therefore,this paper summarizes the theory of "mainline" teaching and builds a "mainline" teaching framework.Through specific case design and implementation,it summarizes the cultivation strategies of "mainline" teaching,with a view to promoting the practical implementation of "mainline" teaching in junior high school geography class.On the basis of relevant research at home and abroad,and in the context of the new geography curriculum reform in junior high school,this paper explores how to design and implement the "mainline" teaching of junior high school geography through the methods of literature research,questionnaire survey,case analysis,and action research.Under the guidance of the big concept teaching theory,the author has designed the basic links of "mainline" teaching according to the "six modernizations of the classroom" principle of teacher Xia Zhifang,that is,(1)select the situation and scientifically "build" the line.In this part,the author divides the situation types into simulated situation,experimental situation and practice-type situation,and the teacher can select the appropriate situation according to the teaching content.(2)In this link,the author divides the problem main line into "progressive" problem main line,"parallel" problem main line and "scaffolding" problem main line Explore cooperation and think "along" the line.In this link,the author divides tasks into hierarchical tasks,open tasks and self-help tasks.(4)Summarize and apply "migration" line.These four links are the basic links of "mainline" teaching.Through the above steps,the lesson examples of "World Climate" and "Map Reading" are designed to demonstrate the operability of "mainline" teaching in junior high school geography class.Finally,through the evaluation of the classroom observation scale of the teachers,the discussion of the teaching and research meeting and the presentation of the students’ achievements,three main lines of improvement strategies are proposed: the main line of the problem fits the course and reflects the situational coherence;The main line of knowledge focuses on construction to ensure the systematization of knowledge;The activity task pays attention to the level and strengthens the advancement of thinking. |