Adapt speech to a variety of contexts and tasks, using formal English when appropriate to task and situation. (See grade 5 Language standards 1 and 3 here for specific expectations.)

With this standard, students are tasked with understanding why they must use different language in different contexts, as well as adapting an existing presentation for a context other than the one for which it was originally written. In order to fully convey the ideas touched on in this standard, you'll need to check out the first and third Common Core Standards for Language.