一、案例背景《质量守恒定律》是九年级化学第一学期第二章第三节中的内容。对于初涉化学的学生来说,可能觉得化学就是死记硬背,因为开始的元素名称、元素符号,一些实验现象等就已经让他们觉得很头疼,一味的感觉死记硬背其实是很可怕的。大家都知道:兴趣是最好的老师,没有兴趣、没有热情的学习,那也将是很痛苦的。所以在化学教育教学中提高学生学习化学的兴趣及挖掘学科内涵和核心价值是非常重要的,这不但能让学生在愉悦的 First, the case background “The law of conservation of mass” is the content of the third quarter of chapter two of the first semester of ninth grade chemistry. For beginner chemistry students may think chemistry is rote, because the initial element name, element symbols, some experimental phenomena have made them feel a headache, blindly feeling rote is actually very scary. We all know: interest is the best teacher, no interest, no enthusiasm for learning, it would be very painful. Therefore, in chemistry education and teaching to improve students’ interest in learning chemistry and mining discipline content and core values ​​is very important, which not only allows students to enjoy