Easy Grammar systems are always discounted at Schoolhouse Publishing!
Easy Grammar is a classically favorite, simple way to teach grammar. Dr Wanda Phillips uses the prepositional approach and combines it with various strategies for effective teaching. She also added review both on a daily basis (Daily Grams) and cumulatively at the end of each unit (included in Easy Grammar texts). The Teacher's Text includes the Answer Key and the student workbook. Unfortunately, with Easy Grammar the layout is such that the Answers are on the opposing page of the worksheet. You do have reproducing rights within your family, or you can purchase a separate Student Workbook and keep a "clean" teacher's copy.