1. Simple drawings of science knowledge

Simple drawings of science knowledge 1. Pictures of science and technology handwritten newspapers {primary school students}

Science knowledge plug-ins and common sense 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. The voltage between each two wires is 380 volts. They are generally used in power systems, mostly in industrial electricity.

Household appliances generally use single-phase power supply. The three wires are live wire, neutral wire (neutral wire) and ground wire. The voltage between the live wire and neutral wire is 220 volts, so this is not Three-phase electricity, its plugs and sockets are not three-phase plugs and three-phase sockets, the ground wire is for safety. Fruits with antihypertensive effects: Hawthorn; Hawthorn can dilate blood vessels, lower blood pressure, and lower cholesterol.

You can choose 10 wild hawthorns (preferably fresh), mash them and add 30 grams of sugar, decoct them in water and take them regularly. They have good antihypertensive and stomachic effects. Banana; Banana contains a variety of vitamins, which can clear away heat and lower blood pressure, and can be eaten regularly.

Using 30 to 60 grams of banana peel or fruit stem, decoction and taking it are also effective. If possible, take an appropriate amount of banana flower decoction in water for better curative effect.

Water chestnuts have the effect of clearing away heat and lowering blood pressure. You can use 30 to 60 grams each of fresh water chestnuts (wash and remove mud) and jellyfish (wash off salt), make soup, and take it three times a day.

It can both lower blood pressure and resolve phlegm and relieve cough. Pineapple: Regular consumption of pineapple can enhance the hydrolysis of fibrin in the body, improve blood circulation, and eliminate edema and inflammation in the treatment of hypertension, edema, and thrombosis.

Black plum: rich in citric acid, malic acid, and succinic acid. For patients with high blood pressure, dizziness, insomnia, and difficulty falling asleep at night, 3 ebony plums can be stewed in boiling water with an appropriate amount of rock sugar and taken. It has the effects of lowering blood pressure, sleeping, clearing away heat and promoting body fluids.

Apple: Contains 10 nutrients including malic acid, citric acid, vitamins A, B, and C. Regular consumption of apples can improve vascular sclerosis. 5 tips on scientific milk drinking. Drinking milk is good for health, but many people still have some misunderstandings about drinking milk. Here are some tips on scientific milk drinking.

1. It is not advisable to drink milk on an empty stomach in the morning. Because the gastrointestinal peristalsis of the human body is fast when the human body is fasting, the nutrients in milk often enter the large intestine in a hurry without being absorbed.

In addition, it is not advisable to drink milk in large gulps, because this will reduce the chance of mixing with saliva in the mouth, which is not conducive to digestion and absorption. It is best to eat some biscuits, pastries, etc. before drinking milk, or drink milk while eating snacks.

2. Drinking milk at night is more beneficial. Scientific research has found that calcium metabolism in the human body has a special law: at night, especially at midnight, the plasma calcium content will reach a "trough", forcing the body to use a regulatory mechanism to transport calcium from some bones to supplement it.

In this way, although the calcium in the blood is temporarily maintained, the calcium in the bones is reduced. Milk is rich in calcium, so drinking a glass of milk before going to bed can compensate for the body's need for calcium at night.

3. Milk should not be boiled with sugar. Milk is rich in amino acids. Under high temperature conditions, lysine in milk reacts with sugar to form a new compound, fructosyl amino acid.

Not only can this substance not be digested and absorbed by the human body, it will actually affect human health. It is best to drink milk fresh. If it is too cold, just heat it slightly. 4. If you don’t like milk, you can drink yogurt.

Most people who are "averse" to milk suffer from lactose intolerance. These people can try drinking yogurt. The lactose content in yogurt is greatly reduced, but almost all the nutrients of milk are retained. The lactic acid bacteria in the yogurt can survive and reproduce in the human body, which is beneficial to the absorption and utilization of nutrients and improves immunity.

Yogurt does not contain antibiotics and is easy to digest and absorb, so it can be consumed on an empty stomach. 5. Yogurt cannot be heated for drinking.

Drinking yogurt mainly consumes its nutrients and live bacteria. If yogurt is heated, the human body can only drink nutrients but lose the biologically active lactic acid bacteria, so do not drink it after heating. Mercury is the smallest terrestrial planet in the solar system.

It is very difficult to observe because it is blocked by the strong light of the sun. Before his death, Copernicus regretted that he had never seen Mercury in his life.

After the 1970s, humans have a better understanding of water quantity. Mercury is the smallest terrestrial planet in the solar system.

It is very difficult to observe because it is blocked by the strong light of the sun. Before his death, Copernicus regretted that he had never seen Mercury in his life.

After the 1970s, humans have a better understanding of 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. The equatorial radius of Mercury is about 2/5 of the Earth.

Mercury has no air. The appearance of Mercury is very similar to that of the moon, with its surface covered with large and small craters.

Volcanic activity may have occurred hundreds of millions of years ago. There are now several plain areas that appear to be formed by volcanic lava on the star surface, and there are also large and small craters everywhere. There is a huge concentric structure on Mercury with a radius of about 1,300 kilometers. It is located at 30 degrees north latitude and 195 degrees west longitude of Mercury. Because of its extremely hot temperature, it was named "Caloric Basin" by scientists.

There are more than 100 craters with radial stripes on the surface of Mercury, as well as a large number of cliffs three to four thousand meters high, some of which are hundreds of kilometers long. Mercury's density is close to that of Earth.

Its center may be a core composed of iron and nickel similar to the size of the moon. It also has a magnetic field, but its strength is only 1/100 of the Earth's. Mercury's orbital speed is 48 kilometers per second, which is 18 kilometers per second faster than the Earth.

It is also the fastest to orbit the sun. It only takes 88 Earth days, which is less than 3 months of the Earth. Mercury takes 1 year. However, the "day" of Mercury is very long. One rotation of Mercury takes nearly 58.65 Earth days, which means that one day of Mercury is nearly two months of the Earth. In one year on Mercury, you can only see the sun twice. sunrise and sunset.

Mercury, like Venus, does not have a satellite. Scientific and technological figures /chinababyxl/kwbc/kjrw/ Hua Luogeng is one of the leading mathematicians in the world of number theory.

But he would rather start anew and leave number theory to study algebra and complex analysis, which he was unfamiliar with. As early as the 1940s, he proposed that "genius lies in accumulation, and intelligence lies in diligence."

Although Hua Luogeng is extremely smart, he never mentions his talent. Instead, he regards "diligence" and "accumulation", which are much more important than intelligence, as the key to success. He repeatedly educates young people and asks them to When learning mathematics, you must "keep your fists in your hands and your music in your mouth" and exercise yourself regularly. In the mid-1950s, Hua Luogeng proposed: "You must have speed and acceleration." The so-called "speed" means to produce results, and the so-called 'acceleration' means The quality of results must be continuously improved.

In 1978, he earnestly proposed at the Chengdu Conference of the Chinese Mathematical Society: "Publish early, evaluate later." Later he further proposed: "Work hard.

2. Fifth grade science in the first volume How to draw good-looking notebooks

Recently, Wenzhou City’s first competition for outstanding scientific notebooks for primary school students came to a successful conclusion. More than 100 scientific notebooks from award-winning students were sold in the city’s experimental primary schools, Lucheng District, Ouhai District, Several schools in Wencheng County are on tour. From science notebooks, we can get a lot of information about students' science learning. Each science notebook is a child's world and a "idea house" for children's growth. "Laboratory", "Broadband Network"... the students' scientific records are really rich. Look, there are phenomena and data they observed in the classroom, and there are also small extracurricular experiments designed by the students based on the knowledge in the class. "Research" class, students set up small experiments after class such as "Will the material of the pendulum affect the speed of the pendulum?" "Will changing the material of the pendulum affect the speed of the pendulum?". These experimental records include text, charts, There are photos, some scribbling and drawing, and some cutting and pasting, with pictures and texts, like a small science magazine.

Teacher Shi, a primary school science teaching researcher at the Wenzhou Education and Teaching Research Institute, said: "Students' experimental recording methods are not required to be uniform. Each student can record the scientific learning process in his or her favorite way, and along with science Through the process of inquiry, children’s recording level continues to improve, which is also a kind of growth. “Students’ notebooks are expressed in many ways. The record book of Fang Zhouyan of No. 2 Primary School in Oubei Town, Yongjia is filled with colorful ink drawings; while the scientific record book of Zhang Kaixiang of Experimental Primary School is like a comic book. He integrates his painting expertise into the experimental records. Each experiment is recorded with comics and a small amount of text; Zhu Peipei’s scientific record book from the experimental primary school is very thick, containing text, pictures, or specimens, and retains her learning records from the third grade to the fifth grade for more than two years.

Each exquisite booklet records the process of children's scientific exploration, recording the students' scientific inquiry footprints. Here are some excellent record books for readers’ enjoyment.

Growth Profile

Author: Yao Piaopiao, Class 5 (3), Shuangyu Central Primary School, Lucheng District

Features: No colorful, no colorful patterns , simple words can also create excellent records. The author puts his own photos on it and excerpts famous quotes to encourage himself to record what he sees and hears at any time. The author sets up two major themes: in-class and extra-curricular. In class, the results of the experiment are sorted out through columns such as "Asking Questions", "Experimental Materials", "Experimental Process", and "Conclusion"; after class, the following sections are used to record the results through "Asking Questions", "Designing Experiments by Yourself", "Finding Information" and other sections Inquiry activities.

Tipsgt;gt;gt;

When purchasing a notebook, try to choose a notebook with larger paper and more pages. Large, you can record more content, and the small science folders distributed by teachers in class are also very convenient to paste in the notebook; thick, you can record more scientific experiments from the third grade to the sixth grade of elementary school, which is convenient for future review and Review and feel your own growth and progress while reading. Lower grade students should try to choose paper with fine shading to avoid crooked and uneven writing when recording. You must learn how to record. Don’t ignore the topic and date of each research activity. The entire record book should be sorted out with table of contents and page numbers for easy reference. Finally, developing good recording habits is most important.

Science Notebook

Author: Qiu Shuyang, Class 6 (5), Chengnan Primary School, Wenzhou

Features: "Why use a magnifying glass to observe", "New things under a magnifying glass" "Discovery", "Characteristics of Magnifying Glass", "Knowledge Links", "Review and Summary"... The author's column settings are unique, much like a class notebook. In addition to experimental observations, there is also a lot of scientific knowledge expansion. The records are mainly written in text, supplemented by cliparts and pictures. It can be regarded as a good scientific review book.

Scientific Mood Diary

Author: Zhu Yanlin, Class 3 (8), Guangguang Road Primary School

Features: 15 articles "Silkworm Baby's Observation Diary" is more like the author In each article, the author records the experience, observations and thoughts of raising silkworms in detail. She also took photos and drew cartoons of the silkworm babies and pasted them in the notebook to enrich the content of her observations. In addition, after each article, there is a section of "Mom's Words", which records the experimental conversations, observations, tidbits and feelings between mother and daughter. The participation of mother and daughter really adds a lot of interest to the record book.

Science Magazine

Author: Ye Zihuai, Class 6 (6), Wa City Primary School

Features: In each experiment, six columns are recorded Content: "Idea House" - records the author's existing knowledge of things; "Knowledge Window" - sorting out classroom scientific knowledge; "Laboratory" - recording the experimental process and findings through charts, data, etc.; " "Broadband Network" refers to the knowledge on related topics collected by the author through the Internet after class; "Creative Workshop" refers to some small experiments designed by students based on the knowledge learned in class, such as learning about magnifying glasses and using various materials to make their own magnifying glasses; "Leave a message" "Board" is some interactive evaluations from students, teachers, and parents.

Scientific Drawing Book

Author: Fang Zhouyan, fifth grader of No. 2 Primary School in Oubei Town, Yongjia

Features: red, yellow, green; flowers , leaves, bows; frogs, piglets, ducks... Gorgeous colors and rich patterns are the first impression the record book gives us. The author records scientific experiments with his favorite colorful and patterned icons, making it a cute and playful read.

3. How to draw a science and technology handwritten newspaper

Studying science, using science and popularizing science and technology is a huge historical driving force for human progress and social development. And the popularization of science as science and technology leads to mankind Social bridges are the eternal theme of human history. Why do leaves fall in autumn? Falling leaves is a skill used by broad-leaved trees in temperate areas to reduce transpiration and prepare for a safe winter. Autumn means the coming of winter. Trees need to go dormant in order to protect themselves, and dormant trees themselves also need nutrients during the winter. In order to regulate their own homeostasis, many Trees need to shed their leaves to reduce the loss of water and nutrients, and to save energy until conditions are suitable before sprouting again. However, some trees such as pines and cypresses can remain evergreen because their leaves are like needle tips and consume very little water and nutrients. Knowledge - Safety Chapter Why stop when the red light is on and go when the green light is on? Although red light and green light are both colored lights, they are also different: red light travels farther than green light, and in foggy weather, red light has stronger penetrating ability than green light. Therefore, using a red light as a stop signal allows drivers to see it early and prepare early. If a green light is used as a stop signal, drivers will not have time to brake, and an accident will occur. Children should also abide by traffic rules. You must Remember: red light stops, green light goes. Science is all around you. Even in ordinary things, there is also luminous gold hidden! In fact, the so-called science is sometimes around us, and we can discover it with careful observation and strong desire for knowledge.

4. How to draw science fiction paintings

Today, with the development of modern social life and the dwindling of limited natural resources on earth, it is necessary to explore the space beyond the earth and save our survival. The harsh environment has become a top priority for the world. Scientists and people of insight from all over the world are all exploring and anxious. Our sense of worry has led us to have various fantasies: living on the moon, living on Mars, turning deserts into oasis, using robots Go to homework... Flying into space has become a reality from human dreams, but to fly further and better develop and utilize space for the benefit of mankind, we still need to continue to dream and practice hard. Elementary school students can draw science fiction paintings Let’s imagine and practice. What should we draw? You can draw fantasy flights to expand human life into farther and larger spaces, build space cities, and design aircraft; you can also dream about good solutions to today's environmental disasters, repairing the ozone layer (to solve the problem of the earth's atmosphere warming and ultraviolet rays entering the atmosphere), High-rise cable cars (to solve traffic jams); large-scale afforestation (waterproofing, desertification). Of course, you can also imagine ways to solve pollution, virus hazards, etc. How to draw science fiction paintings? First of all, teachers should collect and master relevant aerospace and environmental protection information. Before students draw science fiction paintings, they should broaden their horizons so that students can draw something meaningful and whimsical. For example, they can show pictures and video materials to students, and they can also arrange students to do it before class. Find information about aerospace and environmental protection. Let students pay attention to inspect and collect social environmental problems that exist in local communities. Such as roads, traffic, housing, garbage, food, exhaust gas, waste water, commodities, vegetation, etc. Students can learn from their own observations. Inspiration: Teachers can use science fiction paintings drawn by classmates in the school as models for everyone to learn to expand the teaching materials. They can also use some children's toys (spaceships, rockets, robots, etc.) as teaching references. When students have relevant materials, Only then can we come up with good solutions to the problems in life, express ideas through sketches, and finally carry out imaginative creation until completion under the guidance of the teacher. Certain guidance is required on how to draw. For example, make the drawing larger and the composition fuller. The vividness of the painted image, smooth lines, colors, etc. can be carried out through three steps: imagination, sketching, and completion. You can use the good work of your peers to guide you, or you can learn from the works of painters. There are various ways. When drawing science fiction paintings, you can discuss and collaborate with science and technology teachers, combine scientific knowledge from nature classes, or create after visiting science and technology museum exhibitions, which will help you draw better. You can also jointly publish small picture magazines and edit science and technology tabloids, which have both new and new ideas. The form can also achieve good results. The expression form of science fiction paintings can also be completed through computers using drawing software, or printed out, or published online, and even capable students can be guided to try to make science fiction web pages. After the painting is completed, everyone can Organize a hands-on science art exhibition. The work of organizing an art exhibition generally includes selecting works, setting up the exhibition, writing exhibition labels, making invitations, drawing and posting posters, and viewing the art exhibition. There are many ways to organize exhibits, and they should be chosen according to the classroom and actual conditions. They are generally useful. The picture frame (the frame provided by the school or the simple homemade picture frame) is hung with strings or wires and clips or paper clips for display, etc. The whole process requires careful planning by the teacher so that it can be organized in an orderly manner, and it can lead to both division of labor and cooperation in organizing your own art exhibition. This part has two goals. The first is to display the results of the learning activities in the previous part, that is, the science fiction paintings everyone drew for appreciation and evaluation; the second is to know how to hold an art exhibition and what work everyone does. The two parts are connected one after another and complement each other. . Holding a small class art exhibition depends on the situation. When students have completed their creations and have prepared tools, materials, venues, etc., it is better to complete it before weekends or holidays. When visiting the art exhibition, you can evaluate the art exhibition at the same time The effect of the activity is also a better opportunity to penetrate the successful education. It inspires students to boldly make free comments on the art exhibition works. The viewing of the art exhibition can be extended to after class, so that the small class art exhibition can expand its influence.

5. How to draw science fiction paintings

Today, with the development of modern social life and the limited natural resources of the earth, it is necessary to explore the space beyond the earth and save our survival. The harsh environment has become a top concern for the world.

Scientists and people of insight from all over the world are all exploring and anxious. The sense of worry makes us have all kinds of daydreams: living on the moon, living on Mars, turning deserts into oasis, using robots to work... Flying into space has become a reality from human dreams, but we have to fly further and further. To properly develop and utilize space for the benefit of mankind, we still need to continue to dream and practice hard.

Elementary school students can draw science fiction paintings for fantasy and practice. What is the content of the painting? You can draw fantasy flights to expand human life into farther and larger spaces, build space cities, and design aircraft; you can also dream about good solutions to today's environmental disasters, repairing the ozone layer (to solve the problem of the earth's atmosphere warming and ultraviolet rays entering the atmosphere), High-rise cable cars (solve traffic congestion); large-scale afforestation (waterproofing, desertification). Of course, you can also fantasize about solutions to pollution, virus hazards, etc.

How to draw science fiction paintings? First of all, teachers should collect and master relevant aerospace and environmental protection information, and before students draw science fiction paintings, broaden their horizons so that students can draw something meaningful and whimsical. For example, pictures and video materials can be shown to students, and students can also be assigned to search for information about aerospace and environmental protection before class. Students should pay attention to investigating and collecting social environmental problems existing in local communities. Such as roads, traffic, residences, garbage, food, exhaust gas, waste water, commodities, vegetation, etc. Enlightenments gained by students themselves from observation and understanding. Teachers can use science fiction paintings drawn by classmates in the school in the past as models for everyone to learn, so as to expand the deficiencies of the teaching materials. You can also use some children's toys (spaceships, rockets, robots, etc.) as teaching references. When students have relevant materials, they can come up with good solutions to problems in life, express their meaning through sketches, and under the guidance of the teacher, finally create with imagination until completion.

Certain guidance is required on how to draw. For example, the painting is larger, the composition is full, the image is vivid, the lines are smooth, the color is smooth, etc. It can be carried out in three steps: imagination, sketching and drawing. You can use the good work of your peers to guide you, or you can learn from the works of painters. There are many ways.

When drawing science fiction paintings, you can discuss and collaborate with science and technology teachers, combine scientific knowledge from nature classes, or create after visiting science and technology museum exhibitions, which will help you draw better. You can also jointly publish a small illustrated magazine and edit a science and technology tabloid, which is a new format and can achieve good results. The expression of science fiction paintings can also be completed through computers using graphics software, or printed out, or published online, and even capable students can be guided to try to create science fiction web pages.

After finishing the painting, everyone can start a small art exhibition to popularize science. The work of organizing an art exhibition generally includes selecting works, setting up the exhibition, writing exhibition banners, making invitations, drawing and posting posters, and viewing art exhibitions. There are many ways to display exhibits, which should be chosen according to the classroom and actual conditions. Generally speaking, picture frames (frames provided by the school or homemade simple picture frames) can be used, strings or wires and clips or paper clips can be used to hang the exhibits for display, etc. The whole process requires careful planning by teachers so that they can organize their own art exhibition in an orderly manner while dividing labor and cooperating. This part has two goals. One is to display the results of the learning activities in the previous part, that is, the science fiction paintings everyone drew for appreciation and evaluation; the other is to know how to hold an art exhibition and what work everyone does. The two parts are connected front to back and complement each other.

Organizing a small class art exhibition depends on the situation. When students have completed their creations and have prepared tools, materials, venues, etc., it is better to complete it on weekends or before holidays. When visiting an art exhibition, you can evaluate the effectiveness of the art exhibition at the same time, which is also a good opportunity to penetrate successful education. Inspire students to boldly make free comments on the exhibition works. Viewing the art exhibition can be extended to after class, so that the small class art exhibition can expand its influence.