What is a set? This question is usually asked by people who have only recently started going to the gym. We want to say right away that there is nothing shameful in ignorance of certain terms! In our today's article, we will talk in detail about what a set is, what types it is and why it is needed. Interested? Then happy reading
Secondary education and schools 2024, September
Earthworms are living organisms with their own characteristics of development and reproduction. Although the worm has male and female characteristics, its reproduction is preceded by cross-fertilization
Riddles are one of the types of development of thinking in children. The child gets acquainted with riddles from the very childhood. Well, if the first of them contain a picture-answer. Auditory perception together with visual perception will quickly help the child to understand the essence of the hidden
Fern is an interesting and unusual plant. Its life cycle includes the alternation of two generations: sexual and asexual, which lead to the emergence of a new young sprout
Protein is an indispensable element of the cell structure, without its presence the life of living organisms would be impossible. Performing various functions in the human body, it remains the main building substance
Understanding the multiplication table lays the foundation for further study of mathematics. Without such knowledge, learning becomes problematic. Therefore, already in elementary school, it is required to learn the multiplication table
Chronological order is very important in the study of any discipline. It makes it possible to realize what is happening and come to a logical conclusion of the ongoing events. In the absence of chronology, the study of the development of society would be impossible
Outer space consists of many celestial bodies, each of which has its own characteristics. And one of these features of a star is the light that it emits on its own
Self-confidence, purposefulness, finding one's place in society - all this is directly related to the development of speech, the ability to correctly and clearly express one's thoughts. Coherent speech is a combination of fragments denoting one specific topic and carrying a single semantic load
Every person in their life has experienced the desire to eat. What is it? It turns out that this is a feeling that appears in the mind or is physically felt in the human stomach. And depending on the form of manifestation, they share appetite and hunger
Why do all teachers strive to improve their skills? And are there competitions between teachers? And why is winning the "Teacher of the Year" contest important for a teacher?
The village of Konstantinovo was glorified by the great Russian poet Sergei Yesenin. The natural beauties of the Ryazan region became known not only to Russian, but also to foreign readers and admirers of the poet's talent. Currently, excursions are being held in Konstantinovo to memorable places related to the life and work of the national poet
What is the meaning of the word "refutation"? Let's try to find out the types of refutation, the meaning of this word, we will try to identify the algorithm for finding facts to refute the theses
The Day of Unity of Peoples is one of the most important holidays for school students, as it is aimed at educating children in tolerance, kindness, and a sense of respect for each other, regardless of ethnicity
From childhood, we used to think that a centipede has forty legs. This is evident from the title. But does an insect really have twenty pairs of legs? It turns out that everything is not so simple. And this article will talk about how many legs a centipede actually has
The correct form of a compound cardinal numeral is the correct form of its individual constituent numerals. Whether it is the designation of our twenty-five years or the most astronomical numbers
Maxim Gorky noticed that more often than not what the characters say is important, but how they do it. The main thing is not judgment, but manner. Therefore, the most accurate definition of the concept of "speech characteristic" is the nature of the character's vocabulary, the intonational and stylistic coloring of his verbal structures
The diversity of life on our planet is striking in its scale. Recent studies by Canadian scientists give a figure of 8.7 million species of animals, plants, fungi and microorganisms that inhabit our planet. Moreover, only about 20% of them are described, and these are 1.5 million species known to us. Living organisms have populated all ecological niches on the planet. There is no place within the biosphere where there would be no life. In the vents of volcanoes and on the peak of Everest - everywhere we find life in its various manifestations
Peat is one of the types of solid minerals that is most often used in the production of fuel. It is formed in a swampy area and is the result of a massive accumulation of various organic elements that have not completely decomposed
Everyone knows that humans are eukaryotes. This means that all its cells have an organelle that contains all the genetic information - the nucleus. However, there are exceptions. Are there nuclear-free cells in the human body and what is their significance for life?
Changing a noun by case is one of the most difficult rules of the Russian language, but if you understand it well, mistakes will disappear forever
Let's analyze the functioning of the heart muscle. Consider the main problems that may exist with the functioning of the heart muscle
Competitions and olympiads in elementary school make it possible to reveal the talents of children. Teachers are able to find out which students were more able to succeed in a particular subject
Usually, children at school learn fractions in grades 5-6 and meet with them not only until the math exam before graduation, but absolutely all their lives in various fields. This article will answer the most common questions about common fractions
Karakalpakia is a republic in Central Asia, which is part of Uzbekistan. An amazing place surrounded by deserts. Who are the Karakalpaks and how did the republic form? Where is she? What interesting things can be seen here?
Geometry is beautiful because, unlike algebra, where it is not always clear what and why you think, it gives visibility to the object. This wonderful world of various bodies is decorated with regular polyhedra
How to distinguish a rhizome from a root? We are sure that if you ask such a question, many will be surprised, because they believe that this is one and the same thing. But root and rhizome are completely different concepts. Why? Let's figure it out together
The nervous system plays a leading role in ensuring the integrity of the body, as well as in its regulation. These processes are carried out by an anatomical and physiological complex, including departments of the central nervous system (central nervous system)
Today we will talk about a very interesting phenomenon. For example, now those who have graduated from school know perfectly well why it snows or rains. Schoolchildren have the simplest knowledge of anatomy. We have become more attentive to our he alth. The level of medicine for all has grown significantly. And this means only one thing: we have numerous explanations. This is the last noun we will analyze today
The map of our planet is covered with a network of thin imaginary lines - parallels, meridians, equator, tropics and polar circles. In this article, we will talk in detail about what the Southern Tropic is, what kind of line it is, through which countries and geographical objects it passes
Who are proboscis mammals? Representatives of these animals appeared millions of years ago. Find out how many species exist now, what distinguishing features they have
Beijing is one of the largest cities in the world with a population of about 20 million people. The vast majority of the city's residents are ethnic Chinese. Only 11 million people living in the city are registered, the rest are visitors, tourists and illegal workers
Pyramid is a polyhedron based on a polygon. The definition of "height of the pyramid" is very often found in geometry problems in the school curriculum. In the article we will try to consider different ways to find it
Not everyone knows what mosses are (the name of the species, genus). At best, from a school biology course, everyone remembers the familiar cuckoo flax or sphagnum. In reality, a fairly large group of these plants stands completely apart from other currently existing
The largest river in the Chelyabinsk region is considered to be the Miass River. It is the main water artery of the Southern Urals. Its source is considered to be a key located in Bashkortostan on the Bolshoi Nurali ridge. It flows through the city of Miass, Argayashsky, Sosnovsky and Krasnoarmeisky districts, Chelyabinsk
Salair Ridge - part of the region of Southern Siberia, a low-mountain upland. It is a spur of the Kuznetsk Alatau. The ridge begins in the region of the river. Neni, in its upper reaches. Then it descends in a northwestern direction between the rivers Chumysh and Kondoma, flows along the water flow of the Ob
Polymers and materials made from them, household items, equipment are an important part of industry and human life in general. Natural resources, unfortunately, have been greatly depleted during their use. Therefore, people had to learn how to synthesize artificial materials that have a number of important technical characteristics
Origin of natural gas, its characteristics. Composition, properties, features. Industrial production and world reserves of this product. Deposits in Russia and the world
A very important cycle of subjects in the framework of the school curriculum is natural science. After all, it is he who gives an idea of nature, its phenomena, living beings, their relationship with man. Geography, biology, physics and chemistry are the foundation that allows children to enter into life, begin to understand the things that are happening around, navigate and manage them
Smooth muscle tissue: structural features, properties, main functions. Myocytes of smooth muscles, their structure, composition and properties. Classification of the muscles of the animal body. Origin and regeneration of smooth muscles, localization in the body