正确书写化学方程式一直是初中化学教学的重点和难点之一,而化学方程式配平又是书写化学方程式的关键。在配平的教学过程中,笔者曾教过不少方法,除了最小公倍数法外,还有奇数配偶法、暂定系数法、得氧失氧恒等法等。总以为多教一些方法,学生更容易掌握配平的技巧,发散思维也能得到训练。但是,学生在实际配平过程中,并不能根据不同的化学方程式选择不同的方法,反而无所适从。对升人高中的学生进行回访时,反映的却是最小公倍数法记得最牢、用得最熟。这使我们不得不反思,难道方法多一些不好吗?为什么初中化学教材只推荐最小公倍数法?是不是这些方法只 Correctly writing chemical equations has always been one of the key and difficult points in junior high school chemistry teaching, and chemical equation grading is the key to writing chemical equations. In the process of grading teaching, I have taught many ways, in addition to the least common multiple, odd number of spouses law, tentative coefficient method, Oxygen and oxygen are equal. We always think that we should teach more to teach students more skill in grading and divergent thinking. However, students may not be able to choose different methods according to different chemical equations during the actual grading process. When conducting a return visit to a high school student, it reflects the fact that the least common multiple is the most remembered and most used. This makes us have to reflect on, is the method some more bad? Why junior high school chemistry textbook recommended only the least common multiple method is not only these methods