数学的各种概念、定理间的联系、发展变化是无穷的。在教学中根据这些特点,利用中学生可塑性强、思维活跃的发展规律,激发他们的学习热情,培养他们爱科学、学科学的兴趣。例如,在平面几何教学中,完成了基础知识传授、学法指导的基础上,引导学生对一些特殊图形,如:平行四边形、萎形、矩形、正方形等几个概念的内含与外延进行比较。使学生认识到这些概念间的联系其妙无穷。同时对这些图形的性质定理、判定定理进行比较,认识这些定理的发展变化规律。从而激发他们学习的热情,使其感受到学习 The various concepts of mathematics, the connection between the theorems, the development and change are endless. According to these characteristics in teaching, we can make use of the plasticity of middle school students and the active law of development to stimulate their enthusiasm for learning and cultivate their interest in science and science. For example, in plane geometry teaching, based on the teaching of basic knowledge and guidance of learning method, students are guided to compare the implication and extension of some special figures, such as parallelogram, wilting, rectangle and square . Make students realize that the connection between these concepts is infinitely good. At the same time, the nature of these graphics, the theorem of comparison, understanding of the development of these theorems. So as to stimulate their enthusiasm for learning, make it feel learning