I want to invent something called micro air conditioner in the future, because our children love to play. After the fight, you will sweat a lot and your face will be red. Just like a red apple, they will keep panting and shouting, "hot ~ hot!" " So if I want to invent it in the future, it will be much better, and I won't be tired with it every day. It will be as big as an eraser, and it can be put anywhere, in a bag, or hung with a rope around its neck, so that you can play as much as you want without sweating.

If I want to know how to do it, I can do it now.

Article 2: Small scientific papers

Science has a peculiar charm, a magical power, it is everywhere, and it often exists in our lives.

One day, my mother wanted to use a drink bottle and let me wash it. I washed the bottle with warm water, poured out the water and tightened the lid. After a while, I suddenly found the bottle was flat! I was surprised and asked my mother why. My mother smiled and said to me, "Go and find the answer yourself." . So I went to read a book, looked it up on the Internet, and finally found the answer. It turned out that hot water heated the air in the bottle, and the air expanded, which led to the expansion of the bottle. When the temperature of the air in the bottle drops, it shrinks again. At this time, the air pressure in the bottle is lower than that outside the bottle, so the air pressure outside the bottle deflates the bottle. Haha, I see, so this is the principle that air expands with heat and contracts with cold.

There is science everywhere in life. As long as we pay more attention, we will find the footprint of science and let science serve us.

Article 3: Small scientific papers

The day before yesterday, Thursday afternoon, in the third school-based course, Teacher Lan put down the screen, and a teacher taught us to make model planes in that class.

At first, the teacher introduced me to the materials we need to make a model plane today. We started making model planes. The teacher asked us to take out the wing of the model airplane first. Then, with Wang's help, we put the wing aside, found a wooden stick to put the wing into the wooden stick, and then glued the two wings together before installing the main propeller. Finally, when I was making the tail wing of the plane, I took out a sponge block of the plane and glued it to its parts with double-sided tape. Finally, I put the main propeller on the model plane. After I made the plane look like this, I decorated it and put on colorful stickers. I looked at the model plane I made, and my heart was full of joy, as if I had drunk honey.

I am flying on the playground with my plane. I am very happy.