This interactive two-book set with included hot dots pen provides children with 100 lessons on a variety of beginning reading skills appropriate for preschoolers, including letter recognition, matching uppercase and lowercase letters, phonics, sight words, and comprehension. Fifteen of the 100 lessons are challenge activities that prepare children for skills at the next grade level. Includes two 50-page books, total of 100 lessons, and hot dots pen. Requires 2 AAA batteries (not included).