More critical thinking. More college skills. A fresh perspective on EAP. Prism is a five-level (A1 to C1), American English paired-skills course (Reading/Writing and Listening/Speaking), created for students who need to develop a range of academic skills. This Level 4 (C1) Listening and Speaking Teacher's Manual contains teaching suggestions, video scripts, the student's book answer key, and unit quizzes with answer keys.