Counting on Katherine: How Katherine Johnson Saved Apollo 13 by Helaine Becker is a mentor text that highlights one of the famous "Hidden Figures" women! If you don't own a copy of the book, check your local library or you might even find an online read-aloud of the text with a simple Google search!Using mentor texts is one of the best ways to maximize your teaching time. You are able to teach multiple skills, subjects, and topics with just one book!WHAT IS INCLUDED IN THIS UNIT?a week of plans