Tao Xingzhi, an educator, once said that doing is the beginning of knowing, and knowing is the achievement of doing. People's ability is not heard, but done. Only by hands-on operation and positive thinking can we gain true knowledge. Therefore, teachers should not let students be spectators in the classroom, but should let students be the masters of the classroom, use their words and brains, personally participate in classroom practice, and understand the whole process of knowledge generation. Emphasize that teachers should not ask any questions that students can ask; Teachers should not answer any examples that students can answer; Teachers should not write what students can express. The math class is not what the teacher said before. Teachers should actively participate, actively guide and patiently assist in teaching activities, cooperate with students on an equal footing, explore hard, give full play to teachers' leading role, truly liberate students and make them truly masters of the classroom.

Second, let students actively participate in teaching activities

To give full play to students' subjective status, we must improve students' subjective consciousness, that is, students' self-awareness of their own subjective status, subjective ability and subjective value. To awaken and enhance students' subjective consciousness, we must create an equal, democratic and harmonious classroom atmosphere. A good classroom atmosphere can promote the interaction between teachers and students, share their thoughts, viewpoints and knowledge, exchange their feelings, concepts and ideas, turn teachers into organizers, guides and collaborators of learning activities, and turn students into masters of learning. Therefore, teachers should first love students, not only care about life, but also help students learn, think about what students think and worry about what students are anxious about, so that students can feel that teachers are both good teachers and good friends.

The textbook arranges chapters in the form of special topics and adds many activities, which is very helpful to stimulate students' interest in learning and develop their creative thinking ability. In the process of teaching, teachers can collect teaching contents through new columns such as "reading", "thinking", "thinking" and "doing", increase some knowledge closely related to real life, and cultivate students' ability of hands-on practice, independent exploration and cooperative communication.

Third, let students feel what they have learned.

Teachers can use "reading" to stimulate students' interest in learning. Mathematics comes from life and is applied to life. As long as teachers pay attention to creating suitable situations in the teaching process, abstract problems can be visualized and concretized, and students' learning can be sublimated from superficial to deep, from perceptual knowledge to rational knowledge. Arranging some practical problems related to teaching content in reading textbooks can not only expand students' knowledge, but also enhance the practicality of textbooks.

Teachers can use "doing one thing" to guide students to operate and experience the fun of mathematics. Years of exam-oriented education have made it difficult for students to learn and teachers to teach. In the end, students can only draw a gourd ladle to solve problems, and their hands-on operation and practical application ability are quite low, not to mention creative thinking. Examination-oriented education has seriously hindered the development of students' personality. Make full use of the content of "doing one thing" in the textbook, guide students to make some simple geometric models with cardboard, wood strips, iron wires and other materials, and cultivate students' interest in learning. This can not only improve students' practical ability, but also cultivate students' thinking ability and spatial perception ability, which is conducive to the overall improvement of students' mathematical literacy. It embodies the standard that geometric figures can be imagined from simple objects and physical objects can be imagined from geometric figures.