Grammar rules are very difficult to teach a student with an ID because they are abstract. What Sue Buckley, a researcher in the U.K., recommends instead is language practice (15 minutes twice per day) to address telegraphic language, where the student is leaving out helper words and primarily speaking using keywords (caveman talk).

We address this in our curriculum by including a grammar page with each book to target a word or phrase to practice language using the topic of the book they are studying. This is one way we incorporate speech and language into the curriculum. Here is a short video.