Grammar for the Well-Trained Mind: Key to Purple (Student) Workbook by Susan Wise-Bauer

The Key, along with the accompanying Student Purple Workbook (sold separately, Item # 7947) and the Core Instructor Text (sold separately, Item #7946), make up Grammar for the Well-Trained Mind: a complete course that takes students from basic definitions (“A noun is the name of a person, place, thing, or idea”) through advanced sentence structure and analysis—all the grammar skills needed to write and speak with eloquence and confidence.
This innovative program combines the three essential elements of language learning: understanding and memorizing rules (prescriptive teaching), repeated exposure to examples of how those rules are used (descriptive instruction), and practice using those rules in exercises and in writing (practical experience). Each Key to the Student Workbooks provides not only answers, but also explanations for the parent/instructor, and guidance as to when the answers might be ambiguous (as, in English, they often are).
All of the rules covered, along with the repeated examples for each, are assembled for ongoing reference in the Comprehensive Handbook of Rules. This will become the student’s indispensable guide to writing through high school, into college and beyond. From Well-Trained Mind Press.