He is a serious teacher. He has thick eyebrows and wears a pair of glasses on his nose. That tall man looks like a big tree. He is my math teacher.

The math teacher is a very serious person. Whenever the teacher keeps a straight face in class, the students call him a "cold noodle"

When the national flag is raised on Monday, the teacher always looks up solemnly and looks at the national flag raised in Ran Ran with a very serious expression. He is always frowning, as if thinking about something.

No matter when you come, the teacher is very serious. I remember once, the school held a sports meeting. The previous competition was wonderful, but the teacher only cheered for the athletes and didn't look happy. No matter how much we tease the teacher, the teacher always keeps silent, but in the end he is forced to say, "I am your teacher anyway." How can you talk to me like that? How rude! " Hey! I thought the teacher could say something humorous. What a bummer! At the last stage of the sports meeting, after announcing that our class won the second place, the teacher still kept a straight face. Back in the classroom, the teacher said to us, "The result is not bad this time, but we must win the first place next time." Really, not a word of praise! It's too serious!

We have such a serious teacher that everyone is afraid of him. In front of him, no one dares to joke. Even the most naughty boys in the class behave themselves and the class is very quiet. Perhaps it is precisely because the discipline of the students in this class is obviously much better and their grades have improved. I won the first place in the final exam in the whole school year. Only then did I find a smile on the math teacher's face! So the teacher can laugh!

From then on, we know that we have a kind and strict good teacher!

Chapter two: My math teacher.

"Teachers are engineers of the human soul; The teacher is a hard gardener, carefully cultivating young flowers. " Whenever I think of these words of praise to the teacher, I will think of our math teacher, Miss Li.

Look! Here she comes, with long black hair, Zhang Yuanyuan's face and fashionable clothes. She is Miss Li.

Although Miss Li is usually taciturn, she is very active in class. Once, Miss Li wanted to teach us "the problem of meeting", but what was written on the blackboard was "the problem of collision". The students all smiled and pointed out the problem to Mr. Li, but Mr. Li said, "There is nothing wrong, it is a collision problem." After that, Miss Li picked up a classmate and made him stand at one end of the platform and at the other end by himself. Then he made the classmate want to go by himself and shouted, "Go!" That classmate swaggered away silently, and Mr. Li also advanced at a slightly faster pace. Finally, Miss Li and the classmate met in the middle of the platform. Miss Li pulled the classmate to her side and said, "Now, we hit it." After that, the students all burst out laughing and learned a problem-solving thinking.

Another time, our class failed in the exam again. At noon, Miss Li came to the classroom to explain the examination paper to us. When talking about big problems and small problems, Miss Li looked at our test paper and found that many of us made mistakes on this issue. Some people even put the greater than sign and the less than sign backwards, so Miss Li said to us, "Mouth to the left, greater than sign, mouth to the right, less than sign." This sentence made us laugh and remember this knowledge.

Miss Li, you have done so much for us. You are like a lamp, illuminating our future. You want a candle to burn yourself and illuminate others. Miss Li, I love you!