Checkmate is a three-level, full-color workbook in American English for secondary schools in Mexico. It is the perfect complement to any secondary English textbook. Checkmate components A Workbook with: ? A wide variety of Exercises to give students additional practice in language skills, vocabulary and grammar ? An Extension Activity in each lesson to support teachers with mixed-ability classes ? Extra Listening Activities to give students further exposure to spoken English ? Grammar Pages with clear explanations in Spanish ? A Verb List for quick reference ? An Audio CD per level for the student A teacher?s Answer Key booklet for the three levels with: ? Answers to all exercises ? Five quizzes per level ? All Audioscripts.