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课堂效率不高的主要原因是教师在理解教材方面出现偏差.通过一元一次方程教学案例的呈现、评析,提出理解教材是实现课堂高效的前提,进而阐述理解教材应以研读课程标准为基础、应把内容体现的数学本质作为理解教材的着力点、“用教材教”应在充分理解教材的基础上展开.
The main reason for the low efficiency of classroom is that teachers have some discrepancies in understanding the teaching materials.Through the presentation and evaluation of the teaching cases of the primary equation, it is proposed that comprehending the teaching materials is the premise of realizing the efficiency of the classroom, and then the comprehension of the teaching materials should be based on the study of the curriculum standards. To embody the mathematical nature of the content as the focus of understanding of teaching materials, “teaching materials ” should be based on the full understanding of the textbook.