This book is part of School Zone’s Preschool Series, a group of 16 exciting workbooks designed for use by the most important teacher your child will ever have – YOU! Learning should be fun – for you and for your child. Preschoolers are eager to know about words, numbers, colors and many other things. The School Zone Preschool Series provides carefully planned activities to give your child an essential start. Ages 4-6. Preschool.