Many school districts around the nation are re-evaluating how they measure student performance in mathematics. Calls have been made for alternative, authentic assessment tools that go beyond simple, and widely ineffective, multiple-choice tests. This book examines how the Fizz & Martina math video series provides students with hands-on practice for the new assessment techniques used in the California Learning Assessment System (CLAS). Discussion considers students, curriculum, and assessment; more than mimicry mathematics; measuring mathematical power: CLAS as a mathematical power meter; CLAS enhanced multiple-choice questions; open-ended problems; what the CLAS open-ended questions ask of students; what Fizz and Martina do with students; and how Fizz and Martina help prepare students for CLAS. Contains a list of 12 selected readings. (MKR)