While watching the lecture, Professor Ma of Northeast Normal University described the effect of curriculum reform, and used this example to analyze the influence of curriculum reform on the change of teachers' teaching concept. I remember in the lecture, Mr. Ma analyzed that this example fully reflected the change of teaching methods in the curriculum reform, reflected the students' autonomy and cooperation, and made students speak and learn to communicate. Through the effective guidance of teachers, it has created a platform for students to operate independently, explore independently and cooperate and exchange, which has a positive role in promoting the construction of knowledge. Students fold different halves on paper. Although the shapes are different, the painted parts are different and the folding methods are different, they all reflect half of the paper area, so that students can understand the difference between half and the whole. In the activities of moving eyes, hands, brains and mouths, and in the process of exploration, discovery and understanding, students further know and understand some practical meanings, and cultivate their abilities of hands-on operation, observation and comparison, analysis and reasoning and problem solving.
(2) Students use the same square paper to fold a quarter. The teacher threw out a question: is a quarter of your area the same size? A: In the lecture, this example is a teaching link in the second half. On the basis of half, students can show that the areas are the same, all overlap and speak accurately. In this process, students' learning atmosphere is particularly active, there are some exchanges and innovations, and students' passion can be seen.
In this teaching design, students can not only learn mathematics knowledge, but also cultivate their interest in learning, mathematical thinking, cooperation and communication skills.