This book contains everything you need to know in order to achieve your full potential on the math ACT. It can be used as a standalone text or as a companion to the official prep guides published by ACT. This second edition replaces the first edition, which sold more than 26,000 copies. In addition to updated content to reflect changes in the math ACT, this edition contains several improvements. The most important improvement is in the way it is structured. The structure enables students with high target scores (well over 30) to zero in on the material they need without getting bogged down in math fundamentals; whereas students with more modest target scores can focus on the fundamentals without being distracted by advanced material not needed to hit their targets. Other improvements include more challenging problems to reflect the increasing difficulty of the test, expanded treatment of advanced topics that appear on the test less frequently, many more calculator tips with screen shots from the TI-84 family of calculators, and an improved tips and techniques section for taking the test. The strengths of the earlier material are preserved, including a comprehensive review of early math (averages, percentages), followed by topics from algebra 1, geometry, algebra 2, pre-calculus and statistics. For these, there are 38 lessons, more than 550 homework problems, solutions to the homework problems, and calculator tips. The book also contains extensive advice on how to take the math ACT, including pacing, how to take and learn from taking practice tests, and test-taking techniques.