论文部分内容阅读
学过初中化学,都会感觉:化学是一种很重要而又很有趣味的学科,可是那些分子式和方程式实在繁琐难记。同时也会认识到学化学必要学好分子式和方程式,只有运用分子式和方程式才能简捷的来研究和表示物质及其变化。化学教师在教学中,都会体认出它的艰巨性,一面要向学生宣称“反对死记硬背”,一面又要要求学生“必须熟练掌握”。使学生很好的掌握化学分子式和反应方程式,确实是客观存在的一个难题,若采用表格、卡片、歌诀等方法,单纯的强度的采取机械识记,是极端不合理的。化学分子式和方程式,为什么会使初学的人易懂
Having studied chemistry in junior high school, I feel: Chemistry is a very important and interesting subject, but those formulas and equations are complicated and difficult to remember. At the same time, we also recognize that it is necessary to learn formulas and equations in chemistry, and to study and represent matter and its changes simply by using formulas and equations. Chemistry teachers in teaching, will recognize its arduous, one side to declare the students “against rote”, but also requires that students “must be mastered.” To enable students to master the chemical formulas and reaction equations well is indeed a difficult objective problem. If forms, cards, and tactics are used, it is extremely unreasonable to adopt purely mechanical identification of strength. Chemical formulas and equations, why beginners easy to understand