教育心理学研究表明：小学生好用冗长的话语表达自己的思想，如果教师不进一步引导他们在语言上下功夫，不利于他们思维发展与复杂概念的形成。因此，教师必须要求学生时时运用已掌握的词汇和简洁的言语去表述思考的结果。即加强学生的口练。数学教学中经常遇到如下现象：针对 Educational psychology research shows that: Pupils are easy to use lengthy discourse to express their ideas, if teachers do not further guide them to work hard in language, is not conducive to the development of their thinking and the formation of complex concepts. Therefore, teachers must ask students to use mastered vocabulary and concise language to express the result of thinking from time to time. That is, to strengthen the students' oral practice. Maths often encounter the following phenomena: for