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Third-grade mathematical technology gizmo
One,

I want to invent miniature shrink houses 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 shrink house one day.

Second,

Look at my gizmo

Everyone has lofty ideals, and if you want to realize them, you should start with small things.

In order to realize my dream, I began to use my brain and make some small inventions. ...

Today, when I was watching TV, I saw some decorations made by some people on TV, and I thought: Can I do better than them? Sure! I can do it well!

At this time, I began to prepare materials. I searched and searched for a long time, and turned my house upside down, only to find a piece of white yarn and some colored threads. Having prepared the tools, I began to make decorations.

First of all, I folded the gauze in half, sewed the other three sides with a needle, found a piece of paper as big as the gauze, drew a picture on the paper with a colored pen, put the paper into the gauze and sewed the gauze. Then, I drew a beautiful picture on the other side of the gauze with a colored pen, and then I sprayed perfume on it. Finally, I tied the numbered one to the gauze and hung a bell under it. In this way, a sachet is ready.

Look! This is my little invention! Does it look nice?

Whenever I go to school and leave school, I will look at the small invention I made in the fourth grade summer vacation in the window-wind chimes.

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!" " " .

To 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 cut a 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. The third point is plagiarism!

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