化学是一门很有魅力的自然科学,知识点多,具有繁、乱、难的特点,涉及的知识点多而散,要求学生既要有严密的逻辑推理能力,又要有理解记忆能力,具有“第二外语”之称。本文主要站在学生认识是由浅入深的角度上,说说关于含氧酸的元数有关知识的理解。 Chemistry is a very attractive natural science. It has many points of knowledge, has the characteristics of complexity, chaos and difficulty. The knowledge involved is varied and scattered. Students are required to have strict logical reasoning ability as well as understanding memory ability. With “second foreign language ” said. This paper mainly stands on the students’ understanding is from a shallow perspective, to talk about the understanding of the meta-knowledge of the oxygen acids.