TMost teenagers, almost of them don’t know what they will be doing in the future.

That's why parents have to tmake athe decision what subjects their children will have been taking duringtake for the next school year.

DoHave you heard that mathematics is the queen of sciences?

That is the reason why my sister and her husband will have transferred their son to math class involvingwith a tutor withinfor 2.5 months for his betterto improve his understanding of the scientific foundations.

Logically the best way to achieve a goal is to looks at it as a project.

And if you what to see an excellent outcome, you have to know how to answering for the questions: what, who, when and maybe other of cause if you want, or you may apply SMART goal setting technique.

could not understand "and maybe other of cause if you want"

You know my relatives gothave a very clear and specific goal and that is why.

could not understand what "and that is why" is referring to. Possible correction: "My relatives have a very clear and specific goal as a result of the SMART goal setting technique" or "That is why my relatives have a very clear and specific goal."

An entrance test will have beenbe conducted in 2.5 months, according tond based on these results of which the children will be assigned to different classes.

Obviously, since they pay a tutor, they would like to understand how they measure the process of acquiring knowledge and how achievable the goal is.

the third clause is awkward but does not have outright errors

My sister asked the tutor givingto give her a report after the classes.

Of course they want their son to be result-oriented when he’s doing the math tasksproblem sets.

was unsure what "doing the math tasks set" referred to. Possibly "when he's learning math" also?

And they hope he will be, especially because he knows, that will receive a new alpine twin-tip ski.

Could not understand the meaning of this sentence

In conclusion, I want to add it will be great if my nephew passes this test, however it is much more important that he will understand how exciting takingit is to take part in new projects, and to acquiringe new skills, abilities and experience.