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化学是人们了解事物化学性质、利用事物化学性质、改造事物化学性质的一门科学。由此可见,学生在学习化学知识时必须具有认识事物化学性质的素养。而这些素养不是学生与生俱来就拥有的。因此,在教学中,教师要有意识地培养学生的认识素养。一、引导学生观察事物观察一种物质与看一种物质属于两种完全不同的概念。通常来说,人们看事物,就是仅仅从外观上去看一种物质,这只是观察事物的一个方面,这种观察事物的方式不能
Chemistry is a science for people to understand the chemical properties of things, to use the chemical properties of things, and to change the chemical properties of things. Thus, students must have the knowledge of the chemistry of things when learning chemistry. These literacy is not born with the students have. Therefore, in teaching, teachers should consciously cultivate students’ awareness of accomplishments. First, to guide students to observe things Observing a substance and looking at a substance belong to two completely different concepts. Generally speaking, people see things, just look at the appearance of a substance, this is only one aspect of the observation of things, this way of observing things can not