“今宵酒醒何处,杨柳岸晓风残月.”古人见杨柳,便想到凄惨的离别,这是联想.但若只想到离别,那就是思维定式了.在化学学习中,思维定式表现为思维的一种趋向性,总是按照某种习惯的思路和方法去分析、解决问题,当这种习惯思路与实际问题的解决途径一致时,能产生正面的影响, “Tonight where to wake up, willow shore Xiaofeng moon. ” The ancients see willow, they think of miserable parting, this is the association .But if only want to leave, that is the way of thinking.In chemistry learning, the thinking of fixed expression As a kind of tendency of thinking, always analyze and solve the problem according to a habitual way of thinking and method. When this habitual mentality is consistent with the solution of practical problems, it can have a positive impact,