Shanglan | From the blackboard to the whiteboard

"People who eat chalk ash," "The chalk dyed black hair." This is people's ridicule of teachers. But such ridicule is not fake. The teacher standing on the podium, holding the chalk, writing every day, each lesson is written, a lesson is written with a few blackboards, wiped, wiped it before writing. Every day in get out of class, full of chalk ash, go to the office to wash, continue to write in the next lesson, and it is full of white and gray. The white and gray on the podium in the classroom fell into a table, and the students were cleaned up every day. If the class is poorly managed, the chalk ash can accumulate more than one inch. Wipe the blackboard, wipe it with a hairy board, clean the blackboard, the chalk is full of the classroom, and the students sitting in the front row are afraid of eating chalk ash. They often escape from the classroom and wait for the dust to settle. They had to endure the dust. In order to avoid dust, students can wipe the blackboard with wet towels, which can reduce dust flying. Teachers responsible for managing the class in the school. Whenever the classroom is checked, the classroom first see if there is a chalk under the blackboard, and then see if there is a chalk on the podium.

Everyone who has been studying has wiped out the blackboard, and everyone has eaten chalk. Everyone was looking at the bright light in front of the classroom in the bright classroom in the early morning. Those drops of the dust, under the blackboard, the desk, the teacher's hands, countless white gray.

Each semester, the box in the school is like a hill, which is divided into several boxes per grade. There are several square brown carton on each class, which is filled with chalk, one by one, one by one, one by one, one by one , Like a cigarette. The teacher's small bean bean lies, which are not used, are the weapons of naughty students to sneak attack on their playmates.

As a teacher, you can't do without the chalk. When you are a student, you are used to seeing the chalk.

This is a week -long, day after day, year after year, the teacher's life is the lifetime of eating chalk. Wufa becomes white hair.

People may sympathize with teachers. They are a bit dirty with chalk, which is not good for health, pollutes the environment, and is not hygienic. There is no value for sympathy and compassion. It is true that taking action to change.

In the information age, the Internet has been overwhelming, affecting the corners of life, the times are progressing rapidly, the technology innovation is changing with each other, and all walks of life are synchronized with the times. For example, farmers no longer cut the wheat, and the joint harvesting machine is opened on the field. Maybe one day, sanitation workers will ask the robot to help them pick up garbage. Is the blackboard and chalk unchanged?

In the past four or five years, the blackboard is no longer a blackboard, and the teachers have used whiteboards. The previous blackboard was divided into three pieces, in the middle, whiteboard, and blackboard on both sides. The chalk and blackboard have not completely exited the classroom, but most of the teachers are using whiteboards.

The so -called whiteboard is a large computer screen, which is exactly the same as the computer we usually use. There are various software icons on the screen, WeChat, Baidu, Douyin, etc. A software is installed in the computer, Hivo Whiteboard. Before the teacher, the teacher opened the icon of Hevo every day, and a piece of electronic blackboard flashed out. When writing, the teacher used an electronic pen. If you click on the board in the board, the content of the writing can be saved. If you do n’t need to save it, there is a rubber rubbing under the whiteboard, open the rubber rubbing, use an electronic pen to draw, a scream, for a second, there is no dust, and all the words are disappeared.

During class, the teacher asked some students to write words and questions on the blackboard. Some students held chalk and wrote on the small blackboards on both sides. The teachers always reminded the students that they should not use chalk, too dirty, and whiteboard. Therefore, the two small blackboards left are almost idle. The chalk box on the podium is always full, but it is spare, almost no one.

In addition to writing as a blackboard, Hivo White Board has a wide range of uses. It has courseware in each discipline. Teachers can use these courseware for free. Teachers can also make courseware by themselves, and can be inserted into images, animations, etc. in the courseware. Teachers are in class, and they need to use courseware almost every day.

During the class, the students found their favorite songs, movies, sports competitions, staring at the screen, 40 or fifty students in the class, singing loudly together, magnificent, emotional investment, focus on expressions, singing out, singing out They moved their joy. You can also watch basketball and football games. In addition to nervous learning, watching the show for a while, students can relax and relieve their pressure.

The blackboard entered the information age and synchronized with the times. Humans will enter a wider time and space. There are countless secrets and possibilities in the vast universe, and it is expected that human beings will develop more advanced teaching utensils in the future. Those unhygienic and low -efficiency work utensils will be used in the sky of history like a blackboard and chalk, and the more efficient and clean life and work utensils will be used by the new generation.

(Author: Shang Lan)

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