Introduction: This article is after teaching Beijing Normal University edition mathematics edition "Price and Factor" in the third unit of the first volume of the fifth grade of mathematics, Beijing Normal University, I was inspired by the feeling - prime numbers and composite numbers are abstract mathematical concepts, which are easy to be confused when students learn, such as prime numbers and odd numbers, combined numbers and even numbers. In order to make the children have a deep impression of prime numbers, I searched and collected information related to prime numbers online, sorted out the following article, and used the delayed class time to teach my classmates a mathematics reading class. After class, the students wrote their thoughts, and the following are two of them are representative.
1. "Remember an Unforgettable Mathematics Class"
Yuxin Primary School Class 5 (2) Sun Aowei
Dingling, the class ringtone rang, Teacher Tang walked into the classroom and said to everyone with a smile, "Students, the teacher wants to ask you a question. Do you think prime numbers are lonely?" I think this question is really strange. Loneliness is used to describe people, so how can one describe numbers? The teacher said again, think about what is a prime number? Everyone suddenly realized that yes, the prime number has only two factors, and the combined number is different. In addition to 1 and itself, there are other factors, just like some people have many friends, while some have only 1 friend.
The students spoke actively. Some say that in life, we should cherish the friends around us and not do things that hurt friendship. Some say that students should communicate more, not be rude or even hurt others, otherwise no one will be friends with you.
I also raised my hand to answer. I think that although prime numbers are lonely, they will not disappear. Just like when encountering difficulties in life, we cannot give up, there will be a rainbow after the storm... Everyone discussed and laughed. Next, the teacher also introduced us to novels and movies related to prime numbers, as well as the applications of prime numbers!
This class passed so quickly. After class, everyone was still unsatisfied and they even talked about their thoughts around the teacher. It was such an unforgettable math class.
2. "Remember an interesting mathematics class"
Yuxin Primary School Class 5 (2) Pang Youyou
Some time ago, we learned the lesson "Prime Numbers and Combined Numbers". The teacher took great pains to let us clearly understand the difference between prime numbers and composite numbers! In class
, the teacher guided us to understand prime numbers and composite numbers. Prime numbers are also called prime numbers. There are only two factors, namely 1 and itself, and the composite numbers have other factors besides 1 and itself. That is to say, prime numbers have only two factors, while composite numbers have at least three factors. Among non-zero natural numbers, the numbers of factors are divided into prime numbers and composite numbers. 1 is very special, and "1" is neither a prime number nor a composite number. After class
, the teacher also prepared a special mathematics class for us - lonely prime numbers, and I have a deeper understanding of prime numbers. Under the teacher's guidance, we learned about novels related to prime numbers. The author used prime numbers to describe the relationship between characters. I also learned that prime numbers are widely used, including automotive gears, cryptography , and pest control.
It seems that learning mathematics well is really important. There are many mysteries in mathematics. Just as Teacher Tang said, the door to the math world is open for us, waiting for us to explore and discover. Students, let’s work together, are you ready?
Yuxin Primary School Tang Yangyang
2022.11.5
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