Based on scientific research and proven practices for learning and retention, Don't Say it Wrong, Say it Vocab Strong has positioned itself as an educational tool for Individual, Home School, Day Care, Alternative Learning, Religious institutions, Tutoring and Vocabulary building enthusiasts. The Vocab Strong series begins with this book, Grade Level 1. There are 12 levels in this series used at your own pace to increase your daily vocabulary and help you sharpen your skills and stand out in a very competitive world.