"those who understand languages very well", what grammatical name is given to it and what's it's function.

In the sentence, the part "who understand languages very well" is an adjective clause. Its function is to modify the pronoun "those".

Explanation:

Just like an adjective does, an adjective (or adjectival) clause has the purpose of modifying a noun or a pronoun in the sentence, offering more information about it. Adjective clauses have a subject and a verb, and they are often introduced by relative pronouns such as "who", "which", or "that". Example: The person who called seemed to be in danger.

In the sentence we are studying here, the adjective clause is "who understand languages very well," introduced by the relative pronoun "who". Its purpose is to modify the pronoun "those".

1. Tell them what's going to happen in the future, basic step-by-step instructions. For example, tell them to do good in Science, so they can get Earth Science next year.

2. Make a deal with them. For example, be like if you get your work done faster, then we will play a game at the end.

3. I think the most important thing for a teacher to do is to make their fun, so the students want to learn more, and in a fun way.

4. Teachers can set high expectations, this pushes students to do better, and actually feel like they can do it or make it.

5. If a teacher has a classroom routine, that makes it even easier, since the students already know what to do, then they will just get it done with.