As a homeschooling mom of five kids, I thought I would be buying one of these for each of my students. The first half of this massive book is for teacher use. It has review questions, additional resources, and activities to include in your lesson plans. The second half is the student pages.
I've decided to keep only one copy for myself to use in lesson planning, and return the rest. For families with more than one child, the student pages can either be copied or purchased separately from the publisher printed or in PDF format.
I really wish the teacher's materials had been printed in the hardcover text rather than this activity book, that way parents could purchase one "teachers book" and as many "student books" as they need.