从一次练习中引发思考,阐述了“思维定势”在学生学习化学知识中的正负两面性,提出了针对思维定势两面性的教学对策,旨在帮助学生强化学习策略、优化知识结构、提高应变能力和学习水平、培养创新能力,从而高效率地完成学习任务。 This paper starts from one exercise and elaborates the positive and negative sides of “Thinking Mode ” in students ’learning chemistry knowledge. It puts forward a teaching countermeasure that aims at the duality of mindset. The aim is to help students strengthen their learning strategies and optimize their knowledge structure, Improve adaptability and learning level, develop innovative ability, and thus efficiently complete the learning task.