教学目的:使学生理解“反比例”的一般定义和反比例关系式,能正确判断成反比例的量。在教学中注意培养学生观察、分析、推理、判断能力。重点难点:本节教学的重点是建立明确的“反比例”概念。难点是判断两种量是否成反比例。教学步骤: 一、揭示课题,简要交待本节课的学习要求,使学生带着明确的目的 Teaching Objectives: To enable students to understand the general definition of “inverse proportion” and the inverse proportion of relations, to correctly judge the inverse proportion of the amount. In teaching, students should be trained to observe, analyze, reason and judge their abilities. Key Difficulties: This section focuses on teaching to establish a clear “inverse proportion” concept. The difficulty is to determine whether the two quantities are inversely proportional. Teaching steps: First, to reveal the subject, briefly explain the learning requirements of this lesson, so that students with a clear purpose