Comment on the caravan of science and technology 800 words

Yesterday, I listened to my son talk happily about the science and technology exhibition after he came home: rockets flying into the sky, spinning hot wheels, moving vertebral body upwards, funny writing in the mirror, lifting weights with cranes and so on. Oh, and his own flashlight. When I brought my son home, I was moved by his excited smiling face. The school opened a door of science and technology for children. From the perspective of parents, I thank the principals and teachers for all they have done to improve the overall quality of children. Look at the busy teachers on campus. I am happy for my children.

After listening to my son's introduction, I think the technology exhibition will also come to our campus. Sure enough, today we saw the technology caravan during the morning run! The children in the class don't know what's going on, and I'm excited! In the second class, all classes are notified to visit by radio. My children lined up to go to the playground. First, they came to the 3D animal picture exhibition area. The children just put on their glasses and were a little at a loss, but they couldn't help crying when they saw the lifelike animals. "Teacher, the big tiger is alive!" "Yes, yes! The golden monkey is so cute! " "Teacher, I want to touch it!"

When I came to the experimental area, the skinless drum attracted the children. There is no drum skin, but when I put my little hand on it, there is a sound. It's amazing! What's going on here? Small eyebrows twist into small question marks. The teacher in charge of the explanation spoke patiently, and the children listened carefully, tilting their heads, which was very interesting.

In the environmental protection photo exhibition area, children get together in twos and threes to talk about their findings. Indoor formaldehyde problem, water resources protection, Antarctic glacier melting and so on have aroused children's interest. I thought they couldn't hear me, but I didn't expect the children to care! The regulation of Yitong River caused the children to cry.

After the visit, I exchanged feelings and discoveries with the children in the warm sunshine. Children's smiling faces are brighter than sunshine, and their curiosity is more precious than gold!

In this activity, I saw that children's knowledge was broadened and their awareness of problems was enhanced. How valuable! Also more concerned about the social problems around us; Activities have played a very positive role in improving students' comprehensive quality and the all-round development of the school. The exhibition of popular science knowledge is really good!

One sunny morning, the sun scorched the hot earth. On this day, the school organized us to carry out popular science caravan activities.

The bell of the fourth class rang, and the students rushed to the playground one after another. Finally, the long-awaited popular science caravan kicked off.

Everything is so novel that students flock to it. The original neat team suddenly flew in all directions like birds. Some students look around, some touch with their hands curiously, some stare intently, some listen attentively to the explanation of the commentator's uncle, and some can't help but move their hands.

I also came to the constellation observatory with curiosity. With the help of the commentator's uncle, I saw the twelve constellations with special glasses. All this is so magical and incredible. I saw my Virgo.

Then I will have time to see other science and technology exhibitions. Gravitational machines, motors and hand-touch light bulbs ..... all of which are dazzling. The students had a good time, and they were all fascinated. It's an eye-opener.

The first thing I played with was the motor. Power generation is circulated between two columns. I heard the commentator's uncle say that the electricity generated between these two pillars can reach 2000 volts, which can cause fatal electric shock to people. For safety reasons, I put a cover on the outside. I touched the lid with my hand. I didn't feel anything at first, but then I felt numb and uncomfortable. I left in surprise. Why?

I'll ask dad when I get home. Dad said that this is the principle of electromagnetic induction, "electricity generates magnetism, and magnetism generates electricity." And the invention of electricity is produced by this principle. So my hands are numb.

Then I finished Gravity Machine. Gravity machine? Does this name sound special? The effect is also very strange. We usually only see that all objects roll from top to bottom, but a downhill ball can be rolled up by gravity with the help of a gravity machine. I don't believe I tried, and the miracle really happened: the ball really went up. I have to admire the power of technology.

The activity of this technology caravan is really pleasing to the eye. Let me know the source of the twelve constellations, and let me feel the charm and strength of science and technology, and also stimulate the students' exploration heart. It also made me understand that I should study hard in the future and use science and technology to benefit mankind. I really hope that the school can carry out more educational activities in the future, so that we can increase our knowledge and feel the magical power of scientific knowledge.