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初中物理教材中涉及到较多的正、反比关系的理论知识,是构成初中物理知识体系的重要部分,也是当下学生学习的重点和难点.其中,以初二初三教学阶段的重力、欧姆定律以及分流和分压等原理对正反比关系的运用最为明显,需要学生不断地进行实践和分析,然后掌握该类定理和公式的正反比关系.事实上,这类正反比关系时常运用于物理实验当中,是学生开展实践研究、分析和总结的重要手段.因此,对于初中物理中正反比关系的研究具有相当重要的意义,甚至在某种层面上也影响了其他学科的学习,这也是本文通过理实结合方式对该规律进行研究的起因.
Junior high school physics textbooks involve more theoretical knowledge of positive and negative relations, constitute junior high school physics knowledge system is an important part of the current student learning is also the key and difficult.Among them, to the second junior high school teaching stage of gravity, Ohm’s law As well as the principle of shunt and partial pressure on the relationship between the positive and negative the most obvious use of the need for students to continue to practice and analysis, and then master the positive correlation between the theorem and formula .In fact, this type of relationship between positive and negative ratio In physics experiments, it is an important means for students to carry out practical research, analysis and conclusion.Therefore, the research on the relationship between positive and negative in junior middle school physics is of great significance and even affects the learning of other disciplines to a certain extent In this paper, the law of the law by combining the reasons for the study.