一、直观诱导初中生童心未泯，抽象思维能力薄弱，直观诱导符合学生从表象到概念、从具体到抽象、从感性认识上升到理性认识的规律。应用直观教具或举出实例进行教学可以使问题形象化、具体化，加深学生对问题的理解。如在讲授“两圆的位置关系”时，可先给定学生如图甲的... First, intuitively inducing junior high school students innocence, abstract thinking ability is weak, intuitive induction in line with the students from the concept to the concept, from the concrete to the abstract, from the perceptual knowledge to the rational knowledge of the law. Using visual aids or examples to teach can visualize and concretize problems and deepen student understanding of issues. For example, when teaching “the positional relationship between the two circles”, students can be given the first picture...