About the Book: Cornerstone 1 (Revised): Grammar and Composition Skills: 2nd Edition Cornerstone: Grammar and Composition Skills for 1-8 (Revised) is a grammar series that makes the task of acquiring the basics of grammar an engaging process for young learners. Feedback from users has made this revision more user-friendly and relevant with more exercises to cater to the needs of the modern teacher and learner. This revised series uses application-oriented tasks for teaching grammar and helping learners hone their communication skills. The application of grammar in day-to-day contexts is facilitated through elements such as vocabulary pages to expand and strengthen language conversation practice to build communicative skills composition tasks