著名科学家开普勒说:“我珍视类比胜于任何别的东西,它是我最信赖的老师,它能揭示自然界的秘密……”.在高中化学教学中,如果教师能科学恰当地运用类比推理,就能有效地化解教学难点,促进学生对知识的理解,激发学生的联想,启发思路,学会探究知识的方法.一、与日常生活知识类比,化解思维障碍案例1:化学平衡与水池在平时教学中,我们感觉“化学平衡”抽象难懂,为突破难点,笔者将“化学平衡”与生活中的“水池”作了如下类比:(1)化学平衡:当一个可逆反应中同一种物质消耗的速率和生成的速率相等时,体系中各物质的浓度和百分含量保持不变,但正 Kepler, a noted scientist, said: “I value the analogy better than anything else. It is my most trusted teacher and it can reveal the secrets of nature ....” In high school chemistry teaching, if a teacher can scientifically and properly Using analogical reasoning, we can effectively resolve teaching difficulties, promote students ’understanding of knowledge, stimulate students’ associations, inspire ideas and learn ways to explore knowledge.And analogy with daily life knowledge to resolve obstacles in thinking Case 1: Chemical equilibrium and In the usual teaching of the pool, we felt that the abstract of “chemical equilibrium” was difficult to understand. To break the difficult point, I made the following analogy with the “pool” of life in “chemical equilibrium”: (1) When the rate of formation of a substance in a reversible reaction is the same as the rate of formation of the same substance, the concentrations and percentages of the substances in the system remain the same, but the positive