Behind the Mask A Book About Prepositions by Ruth Heller*

With vibrant illustrations and clever phrasing, Ms. Heller explains the correct use of prepositions.
My eleven year old read this book to himself to reinforce his grammar study.
We will revisit this book next school year since Ms. Heller incorporates a lot of valuable information in a short book.
*Highly recommend.
-Borrowed from the library.