Holt Psychology: Principles in Practice Readings and Case Studies in Psychology with Answer Key Psychology: Principles in Practice Softcover resource containing readings or case studies that allow students to explore topics from the program in greater depth. Includes comprehension and critical thinking questions with answer key, as well as activities for some cases. Grade: 9 Material Type: Teacher Materials, Resource Materials Format: Softcover, 56 Pages ISBN-13/EAN: 9780030646492 ISBN-10: 0030646499 Product Code: 1132363 National/State: National Copyright Year: 2003