After listening to the video lesson "Writing Multiplication", I was deeply touched. Teachers first create situations to introduce new lessons, so that students can see their favorite cities, stimulate students' interest in learning, and cultivate students' observation ability. In specific situations, students intuitively feel that there is mathematics everywhere in their lives. After reading the pictures, the students can form them correctly. The teacher asked the students to finish independently and tell their own reasoning. At the same time, when calculating, the teacher specially explained the exchange of two factors, that is, two digits multiplied by three digits, and three digits multiplied by two digits. The relationship between them is unchangeable.

Let the students have a better understanding of written multiplication when solving problems with the whole class practicing mathematical problems in design and life as the main line. The lead between each topic is lively and interesting, giving students an immersive feeling. Students swim in the ocean of knowledge in a pleasant scene, and the content of the exercise goes from shallow to deep, which conforms to children's cognitive law.

In order to avoid students' calculation mistakes, the teacher also asked students to be small doctors to diagnose, prescribe drugs and treat typical "cases". In the process of disposal, students know the problems that should be paid attention to in the calculation process.

In the whole classroom, mathematics has always been closely linked with students' lives, so that students can truly feel that there is mathematics everywhere in their lives, thus better stimulating students' enthusiasm for learning mathematics and the past, embodying the spirit of new curriculum reform and paying attention to the formation process of knowledge. In students' life, the previous calculation teaching of mathematics was mainly based on calculation, which was very different from boring calculation. Teachers' computing teaching is very interesting and can stimulate their curiosity.

In short, the teaching objectives of this course are very clear, the key points are prominent, the training of students is in place, and the teaching efficiency is very high. All these show that this teacher is a good teacher who is rigorous in his studies and learns from this teacher. The above is my humble opinion, and there are some inappropriate comments and criticisms.