There is usually one important subject missing from most school. Very few students are taught how to organize their learning, and how to (1)_____ the best use of their time. Let’s take some simple examples. Do you know how to look up words in a dictionary, and do you understand all the information the dictionary contains? Can you (2)______ notes quickly, and can you understand them afterwards? For some reasons, many schools give learners no (3)_____ with these matters. Teachers ask students to memorize pages from books, or tell them to write ten pages, but don’t explain how to do it. Learning by heart can be useful, but it is important to have genuine understanding of a subject. You can waste a lot of time memorizing books, without understanding anything about the subject.