The Basic Unit of Writing
If you are of a Certain Age, this how you were taught writing--
1) Learn the parts of speech, sentence parts, and the rest of grammar.
2) Learn how to construct a sentence.
3) Learn how to write several sentences to make a paragraph.
4) Learn how to write several paragraphs to make an essay.
That's how we were taught to write. Mind you, it is not how anybody actually learned to write-- okay, I can't say nobody learned that way because the first rule of actual writing is that everybody uses their own methods and one person's Functional Approach To Writing is another person's Unspeakably Awful Idea. But the number of people who actually learned to write by the above traditional method is tiny, like the number of people who learned how to play jazz trombone by watching Led Zeppelin videos.
The persistence of traditional grammar instruction in the English teaching world is an ongoing mystery, like the number of people who think vouchers would improve education. Some teachers do it because well, of course, that's what English teachers do. Some teachers do it because it's easier than taking calls from parents that include the phrase, "Well, back in my day..."
Grammar instruction has its place. It's a lot easier to fix things, and a lot a lot easier to talk about fixing things, if you can call those things something other than "things." It's hard to talk about the nuts and bolts of improving a piece of writing if we don't have the words "nuts" or "bolts."
But we know-- have known for years-- that simple instruction of grammar with grammar exercises and grammar drills and all the traditional things does not improve writing. You can read a good recap of the research here, and while I'm highly dubious about any research that claims it has measured the quality of student writing, the fancy big-time research matches what I've learned in my own class-sized laboratory over the past may decades. Drilling students all day on nouns and verbs and participials and dependent adverb clauses will not make them better writer, and CURMUDGUCATION: The Basic Unit of Writing: