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化学课外作业的布置,是教学的一个重要环节。可是由于多种因素的影响和制约,课外作业存在着照搬练习册和习题集及布置的作业偏多、偏深或只注重统一性等现象,导致学生负担过重,学习兴趣和积极性下降,这与全面提高学生素质不相适应。一节化学课下来,学生经历了几个层次的教学活动,接触了多方面的知识,注意力下降,难以形成合理的知识结构。如果设计一些符合学生实际,趣味性、实践性、探索性强,形式新、人口宽的课外作业,对巩
Chemistry homework assignments, is an important part of teaching. However, due to the influence and restriction of many factors, extracurricular activities exist such as copying exercise books and exercise sets and assigning too much, too deep or only focusing on the sameness, which leads to the overburdening of students and the decrease of interest and enthusiasm in learning. And to improve student quality incompatible. A chemistry class down, students have experienced several levels of teaching activities, access to a wide range of knowledge, attention decreased, it is difficult to form a reasonable knowledge structure. If the design of some students in line with the actual, fun, practical, exploratory, new forms, a wide population of homework, Gong