Offers a diagnostic test and twenty lessons covering vital chemistry skills.

Presents daily twenty-minute review sessions designed to help people master the basics of chemistry, covering the periodic table, organic chemistry, molecular structure, biochemistry, and other related topics, with review questions, detailed answer explanations, and pre- and post-tests.

Practical Vocabulary is an essential guide that shows how to use the right words at the right time and defines more than 300 words in real world context: such as the news, science and technology, business and finance, and cyberspace.

Teaches the essential trigonometry skills needed for school or Advanced Placement tests. Concepts range from vectors and the unit circle to Law of Sines and Cosines, inverse trigonometric functions and Heron's formula. Exercises in test format allow students to sharpen their test-taking skills.

Learning biology has just gotten a whole lot easier with Biology Success in 20 Minutes a Day! Packed with hands-on activities, real-life examples, step-by-step lessons, targeted practice exercises, and effective test-taking strategies, Biology Success will provide you with all the tools you need to master essential biology skills in no time at all! Whether it's preparing for Advanced Placement exams or tackling challenging homework problems for class, this book is your key to success. Book jacket.

Focuses on the art of successful written communication. Presents exercises for improving vocabulary, pronunciation, and spelling, as well as understanding context, definitions, word parts, denotation and connotation, synonyms, and antonyms. Includes pre- and post-tests and answers, crossword puzzles for each word list, and an appendix of study tips for retaining definitions and passing standardized tests.

For students new to the rules of writing, or those who need a quick refresher, Writing Skills Success in 20 Minutes a Day provides 20 lessons that promote an in-depth understanding of writing in a short amount of time. Why waste hours when just 20 minutes a day gives students the writing fundamentals they need? This book provides vital instruction for language arts mastery and demonstrates the importance of writing in real-world situations.