Classmates, the teacher would like to share with you a piece of news that I saw on the Internet before. On the left is a paragraph of text, on the right is an image. Which classmate will read the text on the left? Okay, the girl in the first row, you are the first to raise your hand, you come and read.
She read very fluently and clearly, and was the first to stand up. Everyone applauded her for her excellent performance and courage. please sit down.
I believe that through this classmate's reading, everyone understands the news. Foreign media say that we enslave the people of Xinjiang to pick cotton. Is that true? Let's look at the picture on the right. The machines are harvesting cotton. What does this mean? It shows that not only do not have these contents mentioned in the news, but also realize the mechanization of agriculture. Do the students say that this news is true or false? Yes, it is false, it is a rumor fabricated by foreign media, which reflects one of the basic characteristics of information - authenticity.
In this class, the teacher will explore the basic characteristics of information with everyone.
First of all, ask the students to open the textbook, read the content of this section, and then tell the teacher which features of the information are mentioned in the book. Give everyone five minutes, start now. (Title of blackboard writing)
Well, the time is up, which classmate will answer. I saw that everyone raised their hands enthusiastically, so let's talk together.
Yes, I heard about transitivity, shareability, processability, timeliness, relativity of value, and what we just said about authenticity.
Everyone's answers are very comprehensive. It seems that they are all reading the book attentively. It's great. The teacher gives you a thumbs up! Let us learn the specific content of each feature of the information together!
Let's look at the first case on the big screen. People from all over the world can watch the Olympic Games without leaving home. This reflects the transmission of information and shows that information can break through the constraints of time and space. (blackboard transitivity)
Case 2, I ask a classmate to answer. The classmate by the window, tell me.
Well, this classmate said that it embodies sharing, just like parent meetings and class cadres sharing learning experience, all belong to sharing.
Very good, this student not only answered the question of sharing, but also knows how to draw inferences from one instance, please sit down.
George Bernard Shaw once said, you and I each have an apple, exchange each other, and after the exchange, each still has an apple. If you have one thought and I have one thought, exchange thoughts, each of us has two thoughts. The same is true for information, which is the sharing of information. (blackboard sharing)
Who will talk about case three? Okay, the male students in the last row who raised their hands, see you are eager to try, please tell me.
This classmate said that Taobao can judge what we like by analyzing our browsing and shopping data, which is the processability of information. That's right, the answer is fast and accurate, please sit down. (blackboard processability)
What about Example 4, Li Ming missed the registration time for the high school entrance examination?
Everyone answered timeliness, yes. This is the same as the special price in the supermarket. If you miss it, it will be the original price. Then junior high school students need to pay attention to the registration time for the high school entrance examination, so should we still pay attention?
Yes, we don't need it. Such information does not have much value for us, which shows that the value of information is relative, and the value embodied by different people is different.
Through the above-mentioned analysis and learning, we have learned the six basic characteristics of information, and then we will play a game of "you say and everyone guesses". Students are asked to use the information technology group as a unit, and the group discusses a case, and other groups will guess which information feature is reflected later. Did you ask clearly? During the discussion, if you have any questions, you can raise your hand to signal the teacher, and the teacher will go down to check. Give us 5 minutes and start now. (timeliness of blackboard writing, relative value)
A group of students discussed very positively, not bad. The five groups of students also have special recorders, which is very good.
When the time is up, the teacher sees that everyone's discussion has quieted down, and I believe that everyone is ready, which group will come first. Alright, representatives of the first group.
He said that on Thursday's supermarket special day, my mother went shopping for vegetables on Friday, and the event ended. What characteristics did this reflect?
Everyone said it was time-sensitive, that's right.
What other group to talk about. Third group please.
He said he had previously received a text message scam asking to send money. Everyone said it was authentic, very good, please sit down. So, we must not believe scam text messages or phone calls. If you are not sure, you can call 110.
It seems that everyone has mastered it very well and can quickly find the corresponding information features. Can any student tell me what they have gained from this class? Okay, let's talk about this classmate. This classmate said that there is information learned. . . these characteristics. It is very comprehensive, please sit down, through the study of this lesson, we know these characteristics of information. In today's information age, information is ubiquitous. If you master the information, you will grasp the opportunity. We must learn to judge the information and let the information serve us.
This class is coming to an end. The teacher assigns a small homework for everyone. You can check the information after class to see what other features the information has. We will share it in the next class. That's all for today's class, get out of class is over.