More to explore:
How to Write a Scene in 11 Steps (Or 311 steps if you're counting the various edits)
PIE - Author's Purpose. Useful for discussing different types of "writers" (journalist, author, ad copywriter). Re: ads, useful departure for discussion of the purpose of ads ("to persuade you to buy something."
Reader's Notebook for Informational Text. Lots of options. Lots of differentiation.($) [save 28% May 6-7!]