PRACTICE 1 (my opinion)

In my opinion, the part of the practice that I´d like too much is the scheme. It is a good form to organize your second ideas for the main idea, and you can link each ideas. As well it is a good method to develop the main idea easily and structure a text better. Also, it is more useful to study and review your exams. So I think this is the best method to study and develop a text. 

You can make a scheme with differents things, like keys, arrows, numbers, points, letters...