The Core Knowledge Series is a grade-by-grade presentation of the knowledge young people should acquire in early grades. The books help children gain the fundamentals they need to make progress in school--specific knowledge in the subject areas of language arts, fine arts, history, geography, mathematics, science and technology all written in a concise and interesting way. These books are extremely helpful, but please keep in mind they are from a secular publisher so some ideas presented will need editing. Many wonderful illustrations, maps, etc.--these books may be just what you need to insure that you are covering all essential material. p.b.