Pre K Workbooks Set of 4 Activity Books, Learn; Letters, Colors, Shapes, Numbers, Counting, Reading and the Alphabet. Playskool Pre-k and Kindergarten Books, Teach Young Kids, Math, Language, and Basic Skills. Toddlers Can Begin to Learn, Letters & Sounds, Pre-reading Skills, Lowercase & Uppercase Letters, and Writing, Primary & Secondary Colors, Color Name Recognition, Identify Basic Shapes, and Recognize Shape Names, Concept of Numbers, Write Numbers, Identify Number, and Counting Skills