化学教学中的难点,大多是掌握知识的关键。因此,在教学中如何采取切实可行的方法来突破难点,就成为提高化学教学质量不可忽视的问题之一。 1.预习法。课前教师根据新课的知识内容、教学要求和学生实际,确定教学难点,并围绕难点设计出若干个预习思考题,让学习预习并作出解答。有了预习的“铺垫”,学生因思想上有准备,很容易突破难点。例如, Difficulties in chemistry teaching are mostly the key to mastering knowledge. Therefore, how to take practical methods to break through the difficulties in teaching is one of the issues that can not be ignored in improving the quality of chemistry teaching. 1. Prep. Pre-class teachers determine the teaching difficulties according to the knowledge content, teaching requirements, and students’ realities of the new lesson, and design a number of preparatory thinking questions based on the difficulties so that students can prepare for a preview and answer questions. With the preparatory “bedding”, students are easily prepared for ideological breaks. E.g,