Intended for use by students at any level above grade 5, this practice book helps students master fundamental grammar concepts and avoid grammar errors commonly made in speaking and writing. The book emphasizes correct sentence structure and clarity of expression. The book includes editing and proofreading exercises and a section on capitalization and punctuation. The book is self-paced so that students may use it independently, and answers are provided for exercises so that students can check on their own work. Readability of the book has been carefully controlled for younger students, but the approach and design of the book make it useful for older students or students who speak English as a second language. (RS)