How to make the earth theme poster into a third-grade popular science? Primary scientific knowledge is simple and good.

How to make a poster The method of making a poster is as follows:

First, take out your colored pencil! Handmade posters will be very interesting, and there are no dead rules to follow. If you do this, you will definitely make an eye-catching poster.

Second, find a piece of white paper or poster board. There is no size limit for hand-made posters. You can choose any size you like.

Third, draw two lines gently. Draw a line horizontally just below the top. Your title will be in this line. Draw a line above the bottom. Here, you can add some information you want people to know next: phone number, event date or slogan like "Buy our cookies".

Fourth, make a title. Gently draw words in the title area with a pencil. For example, if you are making a poster for Earth Day, you can add some words like this to it. Draw the outline of the text gently with a pencil first, so that it is convenient to adjust when the size is wrong. If the text is too big or too small, erase it and redraw it.

Fifth, do the footer part. Repeat the last step at the bottom-draw gently with a pencil first, and then adjust.

6. Fill in the middle part. No matter what theme your poster belongs to, it must be conveyed through the middle part. If it is a poster about Earth Day, make a picture of the earth. You may want a collage, or just a single picture, but in any case, you should draw the outline gently with a pencil first.

Seven, start filling! Now, a whole poster outline is displayed in front of you. Make sure that the picture conforms to your idea, and then draw the text carefully. You can use markers, colored pencils or crayons. Remember, light text on a light background is difficult to read. If you want to make a collage, cut out your favorite pictures and stick them on the poster.

Eight, put up a poster, so that a poster is ready!

Science of Earth Manuscripts in Grade Three is a big concept. Just as we say that fruits include many kinds, in fact, science includes many kinds, including biochemistry and so on. He played so many roles in human history because he revealed some truths and let us know the rapid progress we could make later. Many tools have been popularized, which can help the development of human society to obtain more efficient production. It was developed by human beings to help them make faster and better progress, so this is its purpose, so it can play so many roles in human history.

1. Any major scientific invention in history is due to the inventor's full play of this original spirit.

2. Science requires all people to give everything willingly, without ulterior motives, in order to accept the heavy cross of cool knowledge.

3. The eternal essence of science lies in unremitting pursuit. As far as ability is concerned, science is endless, and as far as goals are concerned, science cannot be achieved. -Ka von Burr

4. Scientific discussion and research itself contains the most beautiful things, and its own pleasure is reward; So I found happiness in my work. Madame Curie

Science is called science precisely because it doesn't recognize idols, is not afraid to overthrow outdated old things, and listens carefully to the voices of practice and experience. -Stalin

6. Science books make people get rid of ignorance, and literary and artistic works make people get rid of vulgarity; Both are equally beneficial and necessary for real education and people's happiness. Chernyshevski

7. There is no royal road to science, and there are countless reefs and shoals in the long river of truth. Only herb gatherers who are not afraid of climbing, only herb gatherers who are not afraid of stormy waves, can climb the peak to collect fairy grass and go deep into the water to find pearls. -Hua

From the perspective of sociology of science, the popularization of science is a universal social phenomenon, which inevitably has its own "growing point".

The growing point of popular science lies in the intersection of nature and man, science and society. In other words, the interaction between natural science and human society has produced scientific popularization, and science and technology and society, as the "soil" of scientific popularization, have nurtured its growth.

The third grade scientific knowledge handwritten newspaper is simple and good 1. Third-grade scientific knowledge handwritten newspaper (how to write the content of third-grade scientific handwritten newspaper) 1. 1, the space manuscript reports the sky, a place where people can choose infinitely, a mysterious place that people never seem to guess, and a magical seed buried in their hearts. I have a feeling that space is too good for me! I seem to feel the yearning for space, how beautiful it is! What an infinite universe. 2. In today's world, science and technology are developing rapidly, the trend of global economic integration is obvious, and the competition of comprehensive national strength is becoming increasingly fierce. The new situation inevitably calls for new ideas and countermeasures, and new educational concepts are needed to guide the exploration and practice of quality education. As an educator, we should always pay attention to what kind of people the society needs. What qualities can our students rely on to cope with the future? In order to meet the needs of the future society, teachers should take quality education as their responsibility and strive to cultivate comprehensive talents with various skills. 3. Science brings me infinite happiness. I like exploring, and I like discovering. I love science more. Everything in life is based on science. The rapid development of modern science and technology has brought people a better life. As modern primary and middle school students, we should approach science, explore new knowledge and science, and make our life better. 2. What are the scientific tips for drinking milk in the science tabloids in the third grade of primary school? Drinking milk is good for health, but many people still have some conceptual misunderstandings about drinking milk. Here are some tips for drinking milk scientifically. 1. It is not advisable to drink milk on an empty stomach in the morning. Because the gastrointestinal peristalsis is fast on an empty stomach, the nutrients in milk often rush into the large intestine before being absorbed. In addition, the method of drinking milk is not enough. Because this will reduce the chance of mixing with saliva in the mouth, which is not conducive to digestion and absorption. You'd better eat some biscuits and cakes before drinking milk, or drink milk while eating snacks. It is more beneficial to drink milk at night. Scientific research has found that there is a special law of calcium metabolism in the stomach: at night, especially at midnight, the plasma calcium content will appear a "trough", forcing the body to transport some calcium in bones to supplement it through the regulation mechanism. Although this temporarily maintains the calcium in the blood, the calcium in the bones is reduced. Milk is rich in calcium. Drinking a glass of milk before going to bed can make up for the demand for calcium at night. Milk is not suitable for cooking with sugar. Milk is rich in amino acids. At high temperature, lysine in milk reacts with sugar to produce a new compound-fructosyl amino acid. This substance can't be digested and absorbed, but it affects health. It is best to drink fresh milk. If it is too cold, you can heat it a little. If you don't like milk, you can drink yogurt. Most people who dislike milk suffer from lactose intolerance. These people can try to drink yogurt. The lactose content in yogurt is greatly reduced, but almost all the nutrients in milk are retained. Among them, lactic acid bacteria can survive and reproduce, which is beneficial to the absorption and utilization of nutrients and improves immunity. Yogurt contains no antibiotics. Easy to digest and absorb, you can drink on an empty stomach. 5. Yogurt cannot be heated. Drinking yogurt is mainly about eating its nutrients and living bacteria. For example, when yogurt is heated, you can only drink lactic acid bacteria with nutrients but no biological activity, so don't drink it after heating. 3. What are the simple things about the scientific manuscripts in the third grade of primary school? We see stars shining, not because the luminosity of the star itself changes, but because of the occlusion of the atmosphere. The atmosphere is between us and the stars. When starlight passes through the atmosphere, it will be affected by the density and thickness of the atmosphere. The atmosphere is not absolutely transparent, and its transparency will change according to its density. So when we look at the stars through it on the ground, we will see that the stars seem to be flashing. 2. Why do people yawn? When we feel tired, a lot of carbon dioxide has been produced in our bodies. When there is too much carbon dioxide, oxygen must be supplemented to balance the needs of the body. Because these residual carbon dioxide will affect our body's functional activities, then the body will send out a protective reaction, so we yawn. Yawning is a deep breathing action, which will let us breathe in more oxygen and expel more carbon dioxide than usual, and it can also eliminate fatigue. 3. Why can snakes walk without feet? Snakes have many scales, which are the outermost armor on their bodies. Scales are not only used to protect the body, but also to be their "feet". When a snake crawls forward, its body will be S-shaped. Every scale outside the S-shape will tilt upward to help the snake catch the uneven road when it moves forward. These scales cooperate with the muscles of the snake and can push the body forward, so the snake can walk without feet! 4. Why do sunflowers always bloom towards the sun? There is a substance called "auxin" in the stem under the sunflower disk. This substance has the function of accelerating replication, but it is anti-optical, and it will run to the backlight side whenever it encounters light. So when the sun rises, the stem of the sunflower immediately hides to the side of the backlight, as if the whole plant is bent in the direction of the sun. 5. Why does hair turn white when people are old? There is a substance called melanin in our hair. The more melanin, the darker our hair will be. Without melanin, hair will turn yellow or white. When human beings reach old age, various functions of the body will gradually decline, and the formation of pigments will be less and less, so the hair will gradually turn white! 6. Why do fireflies glow? Fireflies emit light because there is a luminous body at the end of their abdomen, which is filled with a lot of phosphorus-containing luminescent substances and luminescent enzymes, so that fireflies can emit flashing light. The purpose of fireflies is not only lighting, but also courtship, vigilance and trapping. This is also a communication tool for them. Different kinds of fireflies emit light in different ways, frequencies and colors, so they can convey different information. 7. Why do you growl when you are hungry? When you are hungry, you will purr. This is because the food you have eaten before has almost been digested. Although the stomach is empty, the gastric juice in the stomach will continue to secrete. At this time, the contraction of the stomach will gradually expand, and the liquid and gas inside will be stirred up and purr. Don't be embarrassed by your stomach growling next time! Because this is a normal physiological action. 4. Popular science knowledge in the third grade of primary school, it is best to send handwritten pictures. The picture should be clear that dust is something that everyone hates and is harmful to the environment? Health is harmful to health. Therefore, throughout the ages, people have always been "diligent, not dusty." However, have you ever thought that human beings can't live without dust? If there is really no dust in nature, what kind of situation will we face? The diameter of dust particles is generally between one ten thousandth and one millionth of a millimeter. The dust that the human eye can see is a giant in the dust, and the tiny dust can only be seen under a high-power microscope. The main sources of dust are soil and rocks. After weathering, they split into fine particles. These particles float in the air with other organic particles. They absorb some sunlight and reflect it around, just like countless point light sources. The sunlight is greatly weakened by the reflection of dust, so it becomes soft. If there is no dust in the atmosphere, strong sunlight will make people unable to open their eyes. Interestingly, dust particles also have a "strange temper", which tends to reflect purple, blue and cyan light with shorter wavelengths, and "likes" to absorb other colors with longer wavelengths. The sky we see on the ground is blue because of the high dust content in the lower atmosphere. If there were no dust in the atmosphere, the sky would be white. Most dust is hygroscopic. Water vapor in the air must adhere to dust to condense into small water droplets. In this way, when the water vapor in the air reaches saturation, the dispersed water vapor will adhere? Dust forms stable water droplets that can float in the air for a long time. If there is no dust in the air, everything on the ground will be wet. What's more, there can be no clouds in the sky, and it is impossible to form rain and snow to adjust the climate, so it is impossible for water evaporated from the ground to return to the ground. If there is less and less water on the earth and it dries up completely, living things can't survive. In addition, due to the refraction of sunlight by these water droplets, there will be colorful natural scenery such as sunset glow, idle clouds and rainbow halo from Zhao Hui. If there were no dust in the air, how monotonous nature would be. 5. The scientific content and common sense of drinking milk. Drinking milk is good for health, but many people still have some conceptual misunderstandings about drinking milk. Here are some common sense of drinking milk scientifically. 1. It is not advisable to drink milk on an empty stomach in the morning. Because of the fast gastrointestinal peristalsis on an empty stomach, the nutrients in milk often rush into the large intestine before being absorbed. In addition, the method of swallowing milk is not feasible, because it will reduce the chance of mixing with saliva in the mouth, which is not conducive to digestion and absorption. You'd better eat some biscuits, cakes, etc. Before drinking milk, or eating snacks while drinking milk. Drinking milk at night is more beneficial. Scientific research has found that there is a special law of calcium metabolism in the body: at night, especially at midnight, the plasma calcium content will appear a "trough", forcing the body to transport some calcium in bones to supplement it through the regulation mechanism. Although this temporarily maintains the calcium in the blood, the calcium in the bones is reduced. Milk is rich in calcium. Drinking a glass of milk before going to bed can make up for the demand for calcium at night. Milk should not be cooked with sugar. Milk is rich in amino acids. At high temperature, lysine in milk reacts with sugar to produce a new compound-fructosyl amino acid. This substance is not digested and absorbed, but affects health. It is best to drink fresh milk. If it is too cold, you can heat it a little. If you don't like milk, you can drink yogurt. Most people who hate milk suffer from lactose intolerance. These people can try to drink yogurt. The lactose content in yogurt is greatly reduced, but almost all the nutrients in milk are retained, among which lactic acid bacteria can survive and reproduce, which is conducive to the absorption and utilization of nutrients and improve immunity. Yogurt contains no antibiotics, is easy to digest and absorb, and can be drunk on an empty stomach. 5. Yogurt can't be heated for drinking. Drinking yogurt is mainly about eating its nutrition and living bacteria. For example, when you heat yogurt, you can only drink lactic acid bacteria that are nutritious but have no biological activity. Don't drink it after heating. How do birds sleep? During the day, birds shuttle in the branches, chirp and fly freely under the blue sky. At night, they should rest, sleep and recover their strength like us, but the sleeping posture is different! Beautiful mallard ducks and swans hunt and play in the water during the day, but they can't rest when they leave their favorite water at night. They bend their beautiful long necks, bury their heads in their wings, and then let themselves float on the water, dreaming a beautiful dream, drifting with the tide, very leisurely. Birds such as cranes, storks and herons always sleep independently on one foot, and when they are tired, they change their other feet, which is a model of combining work and rest. Partridges like to form a big circle in groups when resting, and then their heads are outward and their tails are inward. In this way, no matter which direction the enemy attacks, they can find and escape in time. Birds with sweet voices, such as blackbirds and larks, usually bend their legs when sleeping, and their claws bend to firmly grasp the branches without worrying about falling from the trees. And the owl, a "night-shift" raptor, you can always see it standing on a dense branch with one eye open during the day, actually sleeping. Isn't the owl's sleeping position very different? Is to always monitor the surrounding environment and guard against enemy attacks! = = = = = = = = = = = = = = = = = = Will the fish drown? Fish has gills and can breathe in the water, while fish has swim bladder and can float freely in the water. However, some people say that fish living in water will also drown. Is it true?/You don't say. It sounds ridiculous, but it's true. The swim bladder is the "lifebuoy" for fish swimming, and it can adjust the specific gravity of fish by inflating and deflating. In this way, when swimming, the fish can maintain a stable state without sinking or floating in the water, and the muscle activity is minimal. However, when the fish sinks to a certain depth (that is, the "critical depth"), the huge external pressure will make the volume of the swim bladder irreparable. At this point, its buoyancy is less than its own gravity, so it will involuntarily sink to the bottom of the water, can not float up again, and will eventually drown because it can not breathe. Although fish can still float upward by swinging their fins and tails, it won't help if they sink too deep. On the other hand, fish living in the deep sea can live freely in the deep water because their bones can bear great pressure. If we quickly let the fish living in the deep sea reach the "critical depth", it will continue to "swell" until it comes to the surface because the pressure inside its body cannot be balanced with the smaller pressure outside. Sometimes, it even spits out its internal organs and "explodes" to die. = = = = = = = = = = = = = = = = = = = = = Greedy children become stupid. Gluttony will reduce the blood flow to the brain. If you eat too much at a time, or eat all the time, you will transfer a lot of blood in your stomach, including blood in your brain, to the gastrointestinal tract. Adequate blood supply is the premise of development, and if it is often in ischemic state, its development will inevitably be affected. Gluttony will lead to overeating in the "obese brain", especially if you eat too much nutritious food, the calories you consume will greatly exceed the calories you consume, and the heat energy will be converted into fat and accumulated in the body. If there is too much fat in brain tissue, it will cause "brain obesity". Studies have confirmed that human intelligence is related to the number of wrinkles in the sulcus gyrus of the brain. The more obvious the sulcus gyrus, the more wrinkles, and the higher the intelligence level. The obese brain makes the sulcus close, wrinkles disappear, the cerebral cortex is smooth, the neural network is poorly developed, and the intelligence level will be reduced. Overeating can inhibit the physiological function of the intelligent area of the brain. The way of human brain activity is that excitation and inhibition induce each other, that is, when some parts of the brain are excited, some areas of its adjacent parts are in a state of inhibition. The stronger the excitement, the deeper the inhibition on the surrounding parts, and vice versa. Therefore, if the autonomic nerve center responsible for gastrointestinal digestion is excited for a long time because of overeating, it will inevitably lead to the suppression of adjacent brain intelligent areas such as language, thinking, memory and imagination. If these areas are often suppressed, their intelligence will get worse and worse. Overeating can damage the brain because of constipation. Snacks for children are mostly high-nutrient fine foods, which are easy to constipation. When constipation occurs, the metabolites accumulate in the digestive tract for a long time, and after the action of intestinal bacteria, a large number of harmful substances are produced, which are easily absorbed by the intestine and enter the blood circulation, causing chronic poisoning of brain nerve cells and affecting the brain. 6. What are the short stories of scientific inventions and discoveries in Grade Three? 1. Edison's story Edison only attended elementary school for three months in his life. His knowledge was acquired by his mother's teaching and self-study. His success should be attributed to his mother's understanding and patient teaching since childhood, which made Edison, who was originally considered an imbecile, become a world-famous "king of invention" when he grew up. 2. Hua 1946 Hua, a famous mathematician, was hired as a tenured professor by an American university with favorable conditions. But he replied: "in order to choose the truth, for the country and the nation, I want to return to China!" " "Finally returned to Peiping (now Beijing) with his wife and children. 3, scientists have his motherland Pasteur is an outstanding scientist in France in the19th century, the founder of microbiology, because he invented the vaccination method to prevent infectious diseases, and made great contributions to the disease prevention and control of human beings and livestock and poultry raised by human beings. Qian Xuesen's heart is dedicated to the motherland. Madame Curie Marie Curie (Madame Curie) is a French and Polish physicist and chemist. 1906, pierre curie died in a car accident. This heavy blow did not make her give up her persistent pursuit. She fought back her grief and redoubled her efforts to complete their beloved scientific career. She continued her husband's lecture at the University of Paris and became the first female professor at the university. 7. Scientific Handwritten Newspaper Content Plug Tips Why do most household appliances such as electric fans, washing machines and refrigerators use three-wire plugs? What is the difference between a three-wire plug and a three-phase plug? Three-phase electrical appliances refer to three different live wires, and the voltage between each two wires is 380 volts. They are generally used in power systems and are more common in industrial electricity consumption. Single-phase power supply is generally used in household appliances, and its three wires are live wire, neutral wire and ground wire. The voltage between the live wire and the neutral wire is 220 volts, so this is not three-phase electricity, and its plug socket is not a three-phase plug socket. The grounding wire is to ensure safety. Fruit hawthorn with antihypertensive effect; Hawthorn can dilate blood vessels and lower blood pressure and cholesterol. You can choose 10 wild hawthorn (fresh is better), mash it with 30 grams of white sugar, and take it after decocting in water, which has a good effect of lowering blood pressure and invigorating stomach. Bananas; Bananas contain a variety of vitamins, which can clear away heat and lower blood pressure and can be eaten regularly. It is also effective to decoct with 30~60 grams of banana peel or fruit stalk. Take a proper amount of plantain flowers and take them with water, and the curative effect is better. Water chestnut; It has the effect of clearing away heat and lowering blood pressure. You can use fresh water chestnut (washed, mud removed) and jellyfish (washed and salt removed) to cook soup three times a day. It can not only lower blood pressure, but also reduce phlegm and relieve cough. Pineapple basket: Eating pineapple regularly can strengthen the hydrolysis of fibrin in the body, which has a good effect on improving blood circulation and eliminating edema and inflammation in hypertension, edema and thrombosis. Mume: Rich in citric acid, malic acid and succinic acid. For those with hypertension, dizziness, insomnia and difficulty sleeping at night, 3 pieces of ebony and appropriate amount of rock sugar can be stewed with boiling water, which has the functions of lowering blood pressure, sleeping peacefully, clearing away heat and promoting fluid production. Apple: contains malic acid, citric acid, vitamins A, B, C, etc. 10. Eating apples often can improve arteriosclerosis. Scientific tips for drinking milk are beneficial to health, but many people still have some conceptual misunderstandings when drinking milk. Here are some tips for drinking milk scientifically. 1. It is not advisable to drink milk on an empty stomach in the morning. Because of the fast gastrointestinal peristalsis on an empty stomach, the nutrients in milk often rush into the large intestine before being absorbed. In addition, the method of swallowing milk is not feasible, because it will reduce the chance of mixing with saliva in the mouth, which is not conducive to digestion and absorption. You'd better eat some biscuits, cakes, etc. Before drinking milk, or eating snacks while drinking milk. Drinking milk at night is more beneficial. Scientific research has found that there is a special law of calcium metabolism in the body: at night, especially at midnight, the plasma calcium content will appear a "trough", forcing the body to transport some calcium in bones to supplement it through the regulation mechanism. Although this temporarily maintains the calcium in the blood, the calcium in the bones is reduced. Milk is rich in calcium. Drinking a glass of milk before going to bed can make up for the demand for calcium at night. Milk should not be cooked with sugar. Milk is rich in amino acids. At high temperature, lysine in milk reacts with sugar to produce a new compound-fructosyl amino acid. This substance is not digested and absorbed, but affects health. It is best to drink fresh milk. If it is too cold, you can heat it a little. If you don't like milk, you can drink yogurt. Most people who hate milk suffer from lactose intolerance. These people can try to drink yogurt. The lactose content in yogurt is greatly reduced, but almost all the nutrients in milk are retained, among which lactic acid bacteria can survive and reproduce, which is conducive to the absorption and utilization of nutrients and improve immunity. Yogurt contains no antibiotics, is easy to digest and absorb, and can be drunk on an empty stomach. 5. Yogurt can't be heated for drinking. Drinking yogurt is mainly about eating its nutrition and living bacteria. For example, when you heat yogurt, you can only drink lactic acid bacteria that are nutritious but have no biological activity. Don't drink it after heating. Mercury is the smallest earth-like planet in the solar system. It is difficult to observe because it is blocked by the strong light of the sun. On his deathbed, Copernicus regretted that he had never seen Mercury in his life. Since the 1970s, people have learned more about water quantity. Mercury is the smallest earth-like planet in the solar system. It is difficult to observe because it is blocked by the strong light of the sun. On his deathbed, Copernicus regretted that he had never seen Mercury in his life. Since the 1970s, people have learned more about water quantity. Mercury is the closest to the sun, only 57.9 million kilometers, which is 0.387 times the distance between the sun and the earth. Mercury's equatorial radius is about 2/5 of that of the earth. Mercury has no air. Mercury looks very similar to the moon, and its surface is covered with craters of all sizes. Volcanic activity may have occurred hundreds of millions of years ago. Now there are several plains that look like volcanic lava on the surface of the star, and there are craters everywhere, large and small. Mercury has a huge concentric structure with a radius of about 1300 km. It is located at 30 degrees north latitude and 0/95 degrees west longitude of Mercury. Because it is extremely hot, it was named "Calorie Basin" by scientists. There are more than 100 craters with radial stripes on the surface of Mercury, and a large number of cliffs three or four kilometers high, some of which are hundreds of kilometers long. The density of mercury is close to that of the earth. Its center may be a core of iron and nickel similar to the size of the moon, and it also has a magnetic field, but its intensity is only1100 of that of the earth. Mercury's orbital speed is 48km/s, which is faster than the Earth's 18km. It only takes 88 Earth Days, and less than three months after the Earth, Mercury will be 1 year. However, Mercury's "day" is very long. Mercury rotates 1 nearly 58.65 earth days, which means that 1 day of mercury is nearly two months of the earth, and only two sunrises and sunsets can be seen in 1 year on mercury. Mercury, like Venus, has no satellites.