Kids paraphrase an entry from The Elements of Style, and then revise a sentence. They use the Visual Thesaurus and find synonyms for the phrase very pretty, brainstorm a list of intensifiers (as alternatives to really and very), then write and perform before and after dialogues. The purpose of this exercise is to help children understand how to use precise and economical language. For younger learners, I'd skip the Strunk and White and just give them the guidance needed in age-appropriate terms.