Rocky Zang in The Amazing Mr. Magic is a great book to use with readers who are just about ready for chapter books. The book is written by Megan McDonald. It is three chapters long and will take three sessions to read. The unit plan includes questions to help guide the reading as well as comprehension worksheets on setting, character comparison, and plot elements.
Scholastic is offering a 6 book set in their second grade September book orders. I just taught this unit to one of my reading groups. My students loved it and it boosted their reading confidence!