直观性原则,指的是在教学过程中利用实物、模型,使学生对要学习的内容产生直观的感受,从而真正理解和掌握教学知识。在初中数学教学中,有学生反映数学难,不想学习数学,甚至有学生直接放弃数学,企图利用其他学科弥补数学学科。而学生不能理解数学学习的重要性,没有真正理解和掌握数学知识,就会对学生逻辑思想、探究能力的形成产生不利影响,对其今后的学习和生活也会有不同程度的影响。因此,在日常教学中,教师应该适当应用直观性 The principle of intuition refers to the use of physical objects and models in the teaching process to enable students to have an intuitive feeling about the content to be learned so as to truly understand and master the teaching knowledge. In junior high school mathematics teaching, some students reflect the mathematics difficult, do not want to learn mathematics, and even some students directly give up mathematics in an attempt to make use of other disciplines to make up mathematics. However, students can not understand the importance of mathematics learning. Without understanding and mastering mathematics knowledge, students will have an adverse effect on the formation of students ’logical thinking and inquiry ability, and will influence students’ learning and life to varying degrees in the future. Therefore, in daily teaching, teachers should apply the appropriate visual