化学方程式是学习化学的用语,对于学好化学意义重大,在教学中发现,总有一部分学生,甚至在学完初中化学之后,仍然掌握不了化学方程式的配平。致使影响他们学习化学的积极性,影响他们学习其他的知识。所以本节教学的关键:是使学生掌握其配平步骤,理解化学方程式的含义,从而能够独立的进行化学方程式的配平,给以后学习 The chemical formula is a term used to learn chemistry. It is of great significance to learn chemistry well. In teaching, there are always some students who still can not grasp the chemistry equation after they have finished junior high school chemistry. Which will affect their enthusiasm for learning chemistry and affect them to learn other knowledge. So the key to teaching in this section is to enable students to master their grading steps and understand the meaning of chemical equations so that they can independently formulate their chemical equations for later study