First of all, Ms. Smile brought the activity explanation and explanation. She used three words to express her feelings at this moment: gratitude, looking back and expectation. Thank you for your support and dedication. Looking back on the course of activities since the 22nd session, I look forward to teachers' wonderful teaching class presentation.
Next, let's appreciate the charm of the teachers on the three-foot platform and listen to the math lessons they bring quietly.
Mathematical knowledge is a deductive process. Starting from students' existing knowledge and experience, starting from the distance from point to line and the distance between a group of parallel lines, the understanding of base and height taught by Mr. Dai guides students to gradually understand the base and height of triangles and parallelograms by connecting the two ends of points and lines and the two ends of a group of parallel lines. Through the process of drawing a picture, finding a picture, marking and thinking, students' ability to think and explore independently is cultivated.
As Mr. Smile said, this is a lesson in learning mathematics from association. Although Mr. Dai was forced to switch from the original primary school English teacher to the current math teacher, he was still very happy to teach math at that time. As Mr. Yu Zhiqiang said, cheese has changed. Don't complain, change with it.
It is Linlin's teaching characteristic to speak with data and leave lessons to students. She taught the area of combined graphics, which aroused students' thinking through three questions, and then went on stage to express their ideas. In the process of listening, thinking and expressing, the students in the whole classroom constantly think about problems, discriminate new problems and solve problems, and bring knowledge collision into play in this independent thinking, group cooperation and dialogue and exchange.
Professor Huang Chunhua's flat expansion plans of cuboids and cubes make full use of teaching AIDS and animation demonstrations to concretize abstract graphics and stimulate students' interest in learning. Starting with the plane expansion diagram of a cube, it is found that the cube only needs to pay attention to the surface, and then it is found that the plane expansion diagram of a cuboid needs to pay attention not only to the surface, but also to the edge, which has gone through the process from special to general. The plane expansion of three-dimensional graphics is a difficult point for students. This way of entering the situation cultivates students' concept of space, and students can restore three-dimensional graphics in their own minds, avoiding traditional rote learning.
Teacher Li teaches "nine plus several", first arouses students' understanding of "ten" with random items and whole ten items, and then designs various situations to stimulate students' learning enthusiasm according to the characteristics of junior students, and divides students into two groups for brain competition, thus mobilizing students' enthusiasm. Through the swinging and moving process of the small disk, students' hands-on operation ability and transformation ideas are cultivated. Finally, the formula of several plus nine is listed. Through observation, students find that the added number is "1" less than the number of digits obtained, which leads to the question where "1" went, and cultivates students' idea of integrating ten into one.
? to be continued