Magic Numbers is a numbers book. It uses transparent pages to "take away one" fly on every page. Each numeral page offers a different scene and as children count the flies and take away one they can often be seen making up words to go along with the pictures. This book is a great introduction into basic "take away one" subtraction. It also targets numeral recognition, one-to-one correspondence, counting, and basic "adding one" addition when the story is read backwards. The uses for this book are endless.
I highly recommend this book to parents and teachers.