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Иррациональные числа. Подмножества на множестве R
  • Mathematics

Иррациональные числа. Подмножества на множестве R

Введено понятие иррациональных чисел как бесконечных непериодических десятичных дробей. Классифицированы натуральные, целые, дробные, рациональные, иррациональные числа как подмножества множества действительных чисел.

  • Video
  • level.starter
  • Russian
Роман Юрьевич
Роман Юрьевич
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21
Basic Russian Phrases
  • Russian

Basic Russian Phrases

Now that you understand the Russian letters and numbers, we will begin to learn some basic Russian phrases that you will commonly use as part of everyday communication. We will not attempt to introduce any grammar in this lesson. It is more important to learn some basic communication skills in Russian. Once you have a 'feel' for the language, you will find it easier to understand how the grammar works. When you were young, you learnt to speak before you learnt the grammar. We feel it is easier to learn Russian the same way, however don’t worry, we will cover grammar in later lessons. In this lesson you will learn the Russian language basics. When you are in Russia it is important to realise that Russians have two manners of speaking, formal or friendly. It would be considered slightly rude to use the wrong form in the wrong situation. Use the friendly (or familiar) form when you are speaking to someone you consider a friend. In situations where you have never met the person before you would use the formal form, for example in shops or with taxi drivers. You would also use the formal form as a sign of respect to teachers, or in places like business meetings. Keep this in mind as you work through these Russian lessons. This is much easier than it sounds, as there are only a couple of words that change. (Mainly the Russian word for “you”.)

  • Theory
  • Beginner
  • Russian
Eugeniia Klimutina
Eugeniia Klimutina
0
21
Eco-friendly
  • English

Eco-friendly

We will discuss ecological issues and eco-friendly activities, also we will revise Reported Speech statements.

  • Theory with exercises
  • Upper Intermediate
  • English
Maria  Nekrasova
Maria Nekrasova
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21
Six Thinking Hats Approach
  • English

Six Thinking Hats Approach

Edward de Bono's Six Thinking Hats approach is a simple way to gain objective perception of information in all areas. Putting on a hat of a certain color, a person plays a certain role that corresponds to it, looks at the problem from a certain point of view. There are six hats: white, yellow, red, black, green and blue. ‌‌

  • Exercise
  • Intermediate
  • English
Darina Gribanova
Darina Gribanova
0
21
spoon
  • English

spoon

столовые приборы: spoon, jug, glass...

  • Theory with exercises
  • Beginner
  • English
Anna Snim
Anna Snim
0
21
Traditions
  • English

Traditions

In this class we will talk about traditions and revise zero, first and second conditionals

  • Theory with exercises
  • Pre-Intermediate
  • English
Maria  Nekrasova
Maria Nekrasova
0
21
Best TV shows for learners of English
  • English

Best TV shows for learners of English

We consulted EFL experts, and also tapped into the expertise of the staff within our IH schools, to share their favourite TV shows for learners of English. Whether you're new to teaching or are experienced in your field, these timeless tips might give you some food for thought in the classroom.

  • Video
  • Pre-Intermediate
  • English
Eugeniia Klimutina
Eugeniia Klimutina