Littles Reading Advanced Preschool ages 4-6 includes a series of 4 workbooks. Volume 1 includes 30 lessons (10 weeks) and an introduction to basic letter shapes, vowels and consonants p, m, h, n, w, b, k, c, g, d, t, and f. The consonants are taught in the order of a child's natural speech development. Workbooks can be used as a homeschool tool or as a preschool teacher tool. Workbooks are designed to be a collection of children's academic growth and art. We recommend using 1.75 inch round trans