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新课程实施以来,笔者对小学数学“图形与几何”教学进行了专题研究。发现很多小学数学课堂教学中存在不重视推导过程、学生死记公式、面对问题不能活用公式、课堂教学中师生的操作时间不够、现实事物不能与图形表象有机结合、学生的空间想象能力差等问题。特别是教师的课堂教学效率和学生空间观念的形成有待于提高,还有诸多教材中的问题解决不清楚,师生存在着许多困惑,缺乏科学理论的指导等。笔者认为教师要想上好小学数学“图形与几何”课,应采取以下策略。
Since the implementation of the new curriculum, the author has conducted a special study on the teaching of “Mathematics of Graphics and Geometry” in elementary mathematics. Found that many primary school mathematics classroom teaching does not pay attention to the derivation process, student life-cycle formula, the face of the problem can not be used formula, classroom teaching teachers and students operating time is not enough, realistic things can not be combined with the graphical representation of the students poor spatial imagination problem. In particular, teachers ’classroom teaching efficiency and the formation of students’ space concepts need to be improved. There are still many problems in the teaching materials that are not clearly solved, many confusion exists between teachers and students, and lack of guidance in scientific theories. The author believes that teachers want to be good elementary school mathematics “graphics and geometry ” class, the following strategies should be taken.