Tin as a chemical element and individual substance, structure and properties. Alloys and compounds of tin. Application and brief historical background. Last modified: 2025-01-23 12:01
Secondary education and schools
Looking out the window or walking down the street, you can endlessly admire the beauty of the surrounding nature. And all this beauty is mainly made up of plants. So diverse, bright, lively and juicy, they simply beckon to touch them, enjoy their aroma and admire their magnificence to their heart's content. Last modified: 2025-01-23 12:01
The history of the space age is less than a century away. But during this time there were many significant events. And ahead of us, no doubt, grandiose discoveries and interplanetary flights are still waiting. But even in a hundred years, people will remember the name of the first man who flew around the Earth, and the name of the first woman who flew into space. Last modified: 2025-01-23 12:01
Mars is a solid terrestrial planet of small diameter (only 7,000 km), which is given a red color by an abundance of iron. It was named after the ancient Roman god of war. This cosmic body is similar to the Earth in terms of changing seasons. Last modified: 2025-01-23 12:01
The question of how the Earth was formed has troubled the minds of scientists for many millennia. There were and are many versions - from purely theological to modern, formed on the basis of data from deep space research. But since no one happened to be present during the formation of our planet, it remains to rely only on indirect "evidence". Last modified: 2025-01-23 12:01
Japan is a beautiful country, many even call it fabulous. Ancient traditions and culture, fantastic landscapes… The climate in Japan is also peculiar. Thanks to the latter, this country is different from the rest of the world. Last modified: 2025-01-23 12:01
Canada is a large country in the north of the American continent. Due to its size, it, like Russia, has several climatic zones. This country is washed by the waters of two oceans. It stretches for five thousand kilometers from north to south and six and a half from east to west. In addition, the relief is also changing: the plains give way to mountains. Therefore, the weather in the central part and on the coast is usually very different. Last modified: 2025-01-23 12:01
What is a thunderstorm? Determining its power is the most important task for modern weather forecasters. Everything you need to know about thunderstorms for children and adults, including how to avoid the adverse effects of this phenomenon, further in the article. Last modified: 2025-01-23 12:01
Continental Asia is the dream of climbers all over the world. Almost all of its territory consists of mountains and plateaus. Here are the highest mountain systems of the planet. The mountains of Asia excite the imagination and attract attention. I would like to talk about them a little more. Last modified: 2025-01-23 12:01
The Peru Current is a shallow current in the Pacific Ocean. In this article, you will learn about its features, as well as the phenomena that accompany it. Last modified: 2025-01-23 12:01
Tundra covers the northern part of Russia and Canada. Its nature is rather scarce, and the climate is considered harsh. Because of these characteristics, it received another name - the arctic desert. Last modified: 2025-01-23 12:01
Every year the cities of Austria attract millions of visitors from all over the world. People come here to ski, shop on the famous Viennese shopping street, or simply experience a new culture and world attractions. Last modified: 2025-01-23 12:01
St. Lawrence Island - a territory that belongs to Alaska (USA) and is located in the Bering Strait. It is named after the saint, although the Eskimos originally called the island Sivukak. Last modified: 2025-01-23 12:01
What is the population of Odessa today? What nationalities settled in South Palmyra, how do they live here? This is our article. Last modified: 2025-01-23 12:01
We are accustomed to taking the letters of the alphabet for granted, accompanying us all the time. Perhaps we could no longer do without them, because, in fact, this is the only way to record and transmit information. The article contains interesting facts known to us about the letter "O". A bit of history, prevalence in the alphabets of various peoples, spelling options. Last modified: 2025-01-23 12:01
The Kingdom of Norway is a country located in Northern Europe. The state got its name from the ancient Scandinavian phrase meaning "way to the north". Last modified: 2025-01-23 12:01
Spectacular and simple experiments with Coca-Cola. Clarification of Coca-Cola with milk, a fountain of Coca-Cola and Mentos. Reasons for a failed experience with Mentos - doing everything right. Last modified: 2025-06-01 07:06
About what the word "zga" means, how to understand the expression "you can't see anything"? We will talk about the origin of both expression and words in this article. And also we will give examples of the use of this phraseological expression in Russian literature. Last modified: 2025-01-23 12:01
Didactic material is a special type of teaching aids, mostly visual: maps, tables, sets of cards with text, numbers or pictures, reagents, plants, animals, etc., including materials created on the basis of information technologies distributed to students for independent work in the classroom and at home or demonstrated by the teacher in front of the whole class (group). Last modified: 2025-01-23 12:01
In solution, acid hydroxides are able to donate a hydrogen cation or accept an electron pair and form a covalent bond. Most often they have a state of aggregation of a liquid, but there are also solids among them. Last modified: 2025-06-01 07:06
Various integrated classes conducted in preschool institutions contribute to the comprehensive development of the child's personality. Let's discuss the main aspects of integration in preschool institutions. Last modified: 2025-01-23 12:01
The country of Israel is located in Asia. About 7 million people live here. The capital is Jerusalem. They speak two languages in the state: Arabic and Hebrew. It has common borders with Egypt, Syria, Jordan and Lebanon. The area of Israel (in sq. km) is about 30 thousand. Last modified: 2025-01-23 12:01
Lower limbs perform supporting and motor functions. When a low support is moved to a high one, i.e. on the back, upper limbs or buttocks, the work of the muscles changes along with a change in the direction of thrust. The character becomes different even when moving one or the other limb. Last modified: 2025-01-23 12:01
Poet Mikhail Yurievich Lermontov, many readers know as the author of poignant poems, the theme of which is loneliness. Last modified: 2025-01-23 12:01
In order to get the maximum possible number of points for part C, you need to write an essay correctly. There are many essay topics in this section of the Russian language exam. Most often, graduates write about friendship, duty, honor, love, science, motherhood, and so on. The most difficult thing is to write an essay-reasoning on the problem of conscience. We will give arguments for you later in our article. Last modified: 2025-06-01 07:06
Silicon and its compounds. Silicates, carbide, silane - structural features, properties and areas of use. Amorphous and crystalline silicon. Distribution in nature, significance for humans. Last modified: 2025-01-23 12:01
Sulfur is a fairly common chemical element in nature (sixteenth in content in the earth's crust and sixth in natural waters). Let's take a closer look at the form in which it occurs in nature and what properties it has. Last modified: 2025-01-23 12:01
What fun the holidays bring to any adult (and even more so to a child)! Preparation for them, anticipation and excitement - even more emotional thrill. In Russian schools, students prepare not so many matinees. But the holiday "Harvest Day" (especially since it is almost the first holiday at the beginning of the school year) children are looking forward to. Last modified: 2025-01-23 12:01
Alcohol solution of iodine… Since childhood, a well-known helper for scratches, abrasions and cuts to all children and their parents. It is a fast and effective agent that cauterizes and disinfects the wound surface. However, the scope of the substance is not limited to medicine, since the chemical properties of iodine are very diverse. The purpose of our article is to get to know them in more detail. Last modified: 2025-01-23 12:01
South Africa is a mountainous country that occupies a large area of the southern part of the African continent. Which city is the capital of South Africa? An interesting fact is that the country has three capitals. Last modified: 2025-01-23 12:01
Approximately two-thirds of the species on Earth are arthropods. They live in fresh and s alt water bodies, underground and on its surface, and many of them are able to move through the air. What are the characteristics of arthropods? Examples of animals, their description and structural features can be found in this article. Last modified: 2025-01-23 12:01
Post-embryonic development, otherwise called post-embryonic, in all organisms - the inhabitants of our planet, can be divided into two forms: direct and indirect. The first type is inherent in reptiles, birds, and mammals. The young born or hatched from the egg are a small copy of the adult. Another form of development is found in fish, amphibians and arthropods. In this article, using specific examples, we will consider the stages of development of insects. Last modified: 2025-01-23 12:01
What does "lares" mean? To answer this question, it is necessary to turn to the beliefs of the ancient Romans. They had a number of deities who patronized the hearth. Among them were lares, the meaning of which in ancient beliefs will be revealed in this article. Last modified: 2025-01-23 12:01
Features of the structure of insects of the order Orthoptera. Varieties of representatives of the order Orthoptera: grasshoppers, earwigs, bears, crickets. Last modified: 2025-01-23 12:01
In any multinational country, schools need to pay special attention to the topic of friendship between peoples. And on the eve of the May 1 holiday, teachers are faced with the task of drawing up an action plan for the day of national unity at school. Carrying out such educational work helps to strengthen good relations between different nationalities in the country. This scenario is designed for students in grades 3-4. Last modified: 2025-01-23 12:01
If earlier the most important event in the life of a student was a graduation party after graduation, then over time, such holidays began to gain popularity among primary classes. And then the question arises: where to hold the 4th grade graduation?. Last modified: 2025-01-23 12:01
It's no secret that teaching mathematics in elementary school is different from teaching in high school. For kids, it is important that the lesson is interesting and unusual. A lesson-journey is a consolidation of the material covered. Last modified: 2025-01-23 12:01
The lesson plan for primary school technology is significantly different from the lessons for older students, as the emphasis is on the development of motor skills in children of primary school age. The proposed summary is designed for students in grade 2. Last modified: 2025-01-23 12:01
On the Internet, you can find many options for expressing gratitude to the teacher. But the teacher can also say "thank you" to his students, because for many years there were students who distinguished themselves with their knowledge and behavior, success in sports and creativity. Many texts of gratitude to the student from the teacher are suitable for the graduation of the 4th grade, when the teacher, summing up, notes the various achievements of the students. Last modified: 2025-01-23 12:01
This plan of the physical education abstract is suitable for the youngest children, namely for the preparatory group, since the teams on the exercises are in poetic form. So children will be more willing to do everything that the teacher suggests. Last modified: 2025-01-23 12:01