Creative Imagination Composition in the Fourth Grade of Primary School

So I want to invent a kind of trash can-environmental protection trash can. Although the name is so common, it is not simple. This trash can is inductive. Whenever people throw rubbish without hesitation, the trash can will make a sound: "Please don't litter." If the man walks away, the trash can will reach out and put the garbage in his mouth. I know that some places are under construction now; Workers use machines to build buildings, so there will be a kind of "noise" People should cover their ears every time they pass through these places and leave as soon as possible. Otherwise, listening to this sound for a long time will do harm to the human body. So a music sensor should be installed in the trash can. Whenever "noise" is emitted, it will emit a wonderful music, so that workers no longer have to be harmed by "noise" every day, and they can work with peace of mind and indulge in wonderful music every day. I am thinking that whenever people pass by, they will admire "this is really an extraordinary heart!" " "When I want to take a shower, there is a lot of water in the bucket, which is very laborious to lift, so I want to invent a stroller. The materials needed for the trolley are a screwdriver, sixteen screws, four wheels and a flower board. First, my father and I went to buy materials, then drilled sixteen holes in the flower board, then fixed four wheels, and finally tightened the screws. So the cart is finished. I tried it with my cart. Hey! Why can't the cart pull? I checked, oh! So I locked the wheel. I opened the lock at once. I tried again, and the bucket was easily pulled onto the cart. My little invention finally succeeded. I am very happy. I think I can definitely get ten red flags. I want to have a little invention. I want to have a little invention quietly buried in my heart. The blackboard is dirty, so you can clean the teacher without wiping a button. My invention is dedicated to you to save your energy. I've been thinking about a little invention for a long time. You don't have to worry about rubbing against the teacher. My invention is dedicated to you. I am a little girl who loves to "create". But all I make are paper gadgets. This time, I decided to make a scientific invention. What should I do? Oh, I can make a small light bulb! Because I like the faint light from candles, but lighting candles will have an unpleasant smell, so I can change to small bulbs. First of all, I need a miniature light bulb that can emit orange light, a 1 battery, a wire with copper wires inside, a small candle and a beautiful piece of paper. My mother should have bought the first three items. What about the last two items? I have to prepare myself. I use a toothpick to put the wax oil of the candle into a round box. When it is dry, take it out and cut off a candle with a thickness of one centimeter. This job is not easy to do. I cut it several times and failed. Just when I was about to give up, I suddenly had an inspiration and everything was cut. Beautiful little pieces of paper are easy to handle. Just find a hard card and cut a part. When all the materials were found, I began to work. First cut the wire in half and unplug the wires at both ends. Tie a small light bulb on it and wrap one end around it. Then install the battery, and finally stick the battery firmly with a transparent adhesive candle. It looks easy, but I can't stick to it. Finally, you have to use 502 to stick the "stubborn". The little light bulb finally turned on. If it doesn't light up, just stick it with a small note. Look at the warm light you invented yourself. The joy in my heart is sweeter than eating honey! My gizmo Whenever I go to school and leave school, I will take a look at my gizmo-wind chime in the window, which was made in my fourth grade summer vacation. It was the summer vacation of grade four, and I had finished a lot of homework. It's just that the small production of this homework makes me nervous. Once, I accidentally saw a box of expired "Sanjing Brand Blue Bottle Oral Liquid" in the living room. I went over curiously and opened it. Full, I only drank one bottle! I want to drink these delicious oral liquids, but they have expired. What if you are embarrassed to throw it away? I had a brainwave: "I can dump the expired oral liquid in the bottle and collect the bottles outside to make a beautiful wind chime!" "".Let's start. I'll take the bottle out of the box first, stab a small hole in the bottle with scissors, then put the bottle down and let the oral liquid pour out bit by bit. After all the oral liquid was poured out, I put the bottle on the table. Find out some cardboard and double-sided tape that are not used in art class from home, and find out tools such as wool and scissors. After everything is ready, production will officially start. My mind flashed a lot of wind chimes I had seen in the store, but I just didn't know what to do. I found a lot of art books, and finally found the "underwater world" wind chime in the art books of grade three. My mother and I discussed it for a long time and decided to do it. I first cut a piece of blue cardboard into a circle, then cut off an acute angle on the circle, and then glued the two sides of the corner just cut off with double-sided tape, thus forming a funnel shape. Next, we will make pendants. Pendants are all kinds of underwater creatures. I drew a big crab on a piece of red cardboard, holding big and powerful feet and bulging eyes. It looks awesome! I cut it carefully with scissors. Cut a big, fat carp and a small turtle with a thick shell ... and prepare some wool of different lengths and colors and stick one on each creature's back. The second is to hang a bottle under each creature, which makes me wonder. How can I hang the bottle firmly on it? It's not nice to put it directly on the bottle mouth, and the bottle is glass, so you can't make a small hole. What should I do? I looked at the bottle in a daze. Suddenly, my eyes fell on the toothpick on the table. I had a brainwave and came up with a good idea. I divided the toothpick into two sections, picked up one section, tied it in the middle with wool, put the toothpick obliquely into the bottle mouth and lifted the wool. The bottle hangs steadily. I hang all the bottles in the same way. Finally, all the wool connected with the creature and the bottle passes through the center of the funnel and is twisted into a strand. Such a beautiful wind chime is finished. I showed it to my mother, and she loved it. She praised my good work and hung it in the living room with me. Every time I go to the living room, I look at my wind chimes. Every time it is windy, my wind chimes will sing and dance in the wind. Not long ago, Copenhagen held an international conference on emission reduction. I believe everyone has seen the movie "20 13"! We can think about why the earth has changed so much. These are all directly related to excessive carbon dioxide emissions. One of the ways of carbon dioxide emission is automobile exhaust emission. What a pollution this has caused! Because most cars now burn gasoline, a few burn natural gas and a few burn electricity. In order to generate electricity, a large number of coal mines are mined, which not only causes energy loss, but also may cause dangerous flooding accidents in Wangjialing coal mine. Therefore, environmental protection is too important. For the future of the earth and mankind, I thought about how to save energy and protect the environment. Everyone must know about wind power generation! You can't open the window when the car is driving and the speed is extremely fast. Why? Because the air moves too fast, it will cause strong winds and make people feel cold. If you use wind to generate electricity, it should be enough for a car to run normally! So, I want to make a lot of very, very strong aluminum windmills and install them above the car. When there is wind, the windmill will naturally turn. The faster the wind, the more power will be generated. When the windmill is connected to a small generator, the windmill will generate kinetic energy when it rotates, and the generator will convert it into electric energy and output it to the car, and the car can start, and then the excess electricity will be stored by the battery. When the engine is running at high speed while consuming electric energy, the kinetic energy generated by the windmill will be converted into electric energy, which will be stored to supplement the car, and so on. In this way, both wind energy and waste gas are utilized, and the effects of energy saving, emission reduction and natural environment protection are achieved. Well, that's a good idea! I really hope this day can come earlier, for the sake of environmental protection, for the sake of protecting the earth and protecting mankind. Lin Yuntao, a composition in Class 5, Grade 6, My Little Invention I want to invent the miniature shrink house most. Because there are many lonely people in our life, they can't let go after going out for a long time. The miniature house will solve this problem for you. This miniature house is a model house. It is very small, only a quarter as big as the palm of your hand. It is very simple to use and takes up very little space, so you don't have to worry about it disappearing, because if you accidentally lose it, it will make an abnormal fluctuation, and only the owner of that small house will hear and see it. If someone finds it and wants to keep it for himself, don't be afraid, because only the remote control of the miniature house can be turned on. Other remote controls cannot be turned on. I hope such a house can bring convenience to everyone. This miniature house has a remote control. There are seven buttons on the remote control, and the colors of the buttons are different: red, yellow, blue, green, blue, red and purple. These seven buttons are: absorbing carbon dioxide, turning on the light, turning off the light, keeping warm, cooling down, networking and protecting the cover. People can surf the Internet, watch TV and so on. This kind of use is very extensive. Especially suitable for explorers who often go out. Some people may ask: Where does your energy come from? If an explorer climbs the cliff, how can the house settle down? What if an area is very hot or cold? How can I surf the Internet without a network cable? What if the beast appears in Shan Ye? Don't be afraid of these questions. Because the mysterious remote control is in your hand, you only need to press the red button in the remote control, and the house can save energy for yourself. The main energy source of the house is carbon dioxide. So don't waste so much energy. As long as you press King Wong, the lights will turn on automatically, but the lights in other places will not turn on except in your room. As long as you press the blue button, the light will go out. Just press the green button, the house will automatically heat up, so that you don't have to endure the cold when you go out in winter. As long as you press the green button, the house will become very cool, so you don't have to face the summer heat. As long as you press the red button, the computer will automatically connect with the telecommunications. As long as you press the purple button, there will be a transparent protective cover next to your house to protect you from wild animals. Although this is just an idea, I will try my best to invent a miniature house one day. On summer nights, annoying mosquitoes always bite people, suck human blood, spread diseases, and keep buzzing, which makes people unable to sleep well. I want to invent a special mosquito-killing perfume. This perfume is made of special materials, which can give off a particularly strange fragrance. As long as mosquitoes smell this fragrance, they will immediately lose their attack ability and fertility. Now they can't even suck human blood, let alone breed, and they will infect each other. Over time, mosquitoes will gradually become extinct. This mosquito killer can not only kill mosquitoes, but also be effective against pests such as flies, cockroaches and bedbugs. But it is harmless to human beings and their friends-poultry, livestock and beneficial insects. Why is this? Because in the process of perfume production, we extracted the genes of the four pests and mastered the "life gate" of the "four pests", so the perfume made is particularly targeted and will definitely become a "super secret weapon" to kill the "four pests" in the future! Having said that, you may ask, how to make this perfume? Hehe, I can't tell you now, my perfume is in the trial production stage! When I apply for a patent and put it into mass production, you can buy it everywhere.