This brand-new title for students of Spanish serves the double purpose as a combination workbook and a grammar instruction manual. It is filled with exercises and answers that emphasize informal, conversational language usage. Both the lessons and exercises are arranged progressively, from easy to more difficult, to reflect students' learning development. Mastering Grammar books make ideal supplementary companions to main classroom textbooks. They can also be used as main texts for adult education courses and for individuals learning a new language on their own.