学生在学习过程中并不是被动地接受教师所传递的所有信息,而是会根据自己的知识基础、经验等来对信息进行判断,从而选择性地接收。换言之,学生在学习过程中是具有主观能动性的。在数学教学中提倡先学,就是要让学生在教师的组织和引导下,自主去阅读教材,获得初步感知。在此基础上,教师再结合教学目标引导学生展开合作探究活动,从而促进学生把握重点、突出难点,达成预期教学目标。一、引导学生自主先学,提前感知新知 Students in the learning process is not passively accept all the information passed by the teacher, but will be based on their knowledge base, experience, etc. to judge the information to selectively receive. In other words, students are subjective and motivated in the learning process. In mathematics teaching to promote learning, is to allow students to organize and under the guidance of teachers, to read their own textbooks to gain initial perception. On this basis, teachers combined with teaching objectives to guide students to explore cooperative activities to promote students to grasp the key points, highlighting the difficulties and achieve the desired teaching goals. First, to guide students to autonomous learning, early perception of new knowledge