Easy Grammar books are always discounted at Schoolhouse Publishing!
Easy Grammar Texts
Easy Grammar Texts teach grammar in an easy step by step manner. Each book contains teaching texts, student worksheets, review tests, and cumulative reviews. Schoolhouse Publishing carries the Student Workbook as well as the Teacher's Edition which includes the answers. Unfortuanately, the format of the teacher's edition has the answers printed on the opposing page of the student's work. This is a terrible set up that require you to cover the answer page while the student is working in the book, or to buy a separate student book. If you are comfortable with grammar, you may want to just buy the student book and correct it yourself. Regardless, this is an easy-to-implement, homeschool classic for teaching grammar. I've used it successfully for years.