Essay on invention is better to be simple, about 80 words

Let me briefly summarize, you add a few more words: it is about the invention of the electric fan, first find a toy motor, two batteries, then find a plastic bottle cap to drill a hole in the motor shaft, and then use a hard straight plate to pick up a small fan blade, and then connect the battery, a small fan is made.

I want to invent the shoes of the future - XC - Flying Fast Time flies, and in the blink of an eye, it has been 3059 years. In the past thousand years, scientists have successively developed the PX-Xunsheng train, the CX-Blimache plane, the PC-Shunshui submarine... and other high-tech products.

However, as people's lives become more and more superior, people feel that it is too troublesome and want to have a 3 and 1 means of transportation. I wanted to invent a shoe, and it would function the same way.

The name of this shoe is XC - Feisu, and it is made according to the preparation parts and miniature parts of the high-tech products of the three centuries of Xunsheng, Wind, and Shunshui. Its precision is not just a random hit.

The first function is to go to heaven, you just put on these shoes and shout at them: "Wind, fly!" "The shoes will instantly get bigger, just big enough to fit you.

You are saying the specific place, and the shoe will close itself. If you want to read a book or take a break, just say: "Rest" and he will provide the items.

There should be a small box underneath that is not usually visible. In addition, the function of Shunshui is similar to this, but the password is: "Shunshui, dive!"

Then there's the difference in place.

The third function is floating, which is even more 'fun'. Just say, "Swift, rush!" The shoe will float 25 cm above the ground. As you say your destination, your shoes pop out of your seat and carry you off.

You don't have to worry about running out of energy, because the whole system is solar-powered and stores enough energy during the day to be able to fly at night.

There are also two types of shoes: 'rental' and 'buyout'. The 'buyout' is paid directly in a lump sum, so you can enjoy these features without having to pay for them. 'Rental' is the payment after arriving at the destination every time.

But how do you pay for it? It doesn't matter, you don't have to go to the center to pay in person, because when you arrive at the destination, the shoes will give birth to a small opening that will tell you how much money was spent on the trip, you put the money into the small opening, the money will be transmitted to the center, and if there is a balance, it will be transmitted back.

How, do you want to 'buy out' or 'rent' that?

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There is a compendium of essays in it, and there are all kinds of essays in it.

Invent a golden idea.

When I come to class every morning, the first thing I see is always the big, clean blackboard. Yesterday, when school was out, the blackboard was still full of chalk prints, but the students on duty seriously scrubbed the blackboard spotlessly. However, I found that the students on duty always had to jump up when they were wiping the blackboard, and a lot of the falling chalk ash would choke on their classmates, causing them to cough.

I wanted to invent a versatile chalkboard eraser. This blackboard eraser is very magical, it has several buttons, and the red one is used to erase the height of the blackboard. With a light press of the red button, a folding stick will appear under the blackboard eraser, so that shorter students don't have to jump and jump when erasing the blackboard.

If you don't need to fold the stick, you just need to press the red button again and you can put it away. A green button for washing the blackboard. Press this green button a little harder, because if you press it very lightly, students will accidentally press it when wiping the blackboard, and the surface of the blackboard eraser will seep water, so you can't erase the blackboard.

But it doesn't matter if you press it, just walk to the bucket and press the white button again, and the water on the chalkboard cloth will be squeezed dry quickly. There is also a yellow button. It is used to suck up chalk ash, like a vacuum cleaner.

When classmates wipe the blackboard, they won't choke on chalk dust. Finally, there is a blue button to take out the storage box in the chalk ash inside the chalkboard eraser, and then pour the chalk ash from the storage box into the trash.

That's my "golden idea", a magic blackboard eraser.

Today, because my little sister is going to perform, let me help make a paper headdress.

First, I started looking for materials, I tried it with soft paper, and it turned out that I couldn't wear it. I broadened my search and found that an old calendar was the best material, with a beautiful pattern and a moderate amount of hardness and softness.

The next step is the process: in the first step, I fold the calendar into a paper strip 4 cm wide and 50 cm long. The second step is to make a ring according to the size of the little girl's head, and pay attention not to make it too big or too small, so that it will not be able to wear.

The third step is to nail it with a stapler, and then paste or draw your favorite pattern directly in front of it.

And so my invention is done. Seeing my little sister dancing happily, I felt how happy I was.

I am a person who wants to be an inventor when I grow up, and I want to invent a door when I grow up, and the name of this kind of door is "version universal door", right.

The usefulness of the universal door is that it can be opened with a key, if you forget to bring the key, you can open it with your fingerprint, if your hand is broken, you can open it with a password, if you forget the password, you can open it with a card, if you forget to bring your card, you can also use ultrasound to open, if your voice is hoarse, you can use a long look to open it (if your face has been entered into the program, the program recognizes who you are, the door can be opened, if you don't know, the door can not be opened). If there is a thief, the universal door can also automatically call the police, and an iron fist will be stretched out next to it to hit the thief, and after the fight, an iron net will pop out to catch the thief, and wait for the police to arrest him.

I also want to invent a robot that can help you cook, do laundry, do groceries, ......If you get sick, it will automatically call 120. If there is a thief, he will call the police, and he will have to fight the thief ......He will also accompany you to play chess, do sports, practice martial arts ......

I love inventing things, and I envy scientists and inventors.