These two-book sets with included Hot Dots provide children with 100 lessons on a variety of reading and language arts skills appropriate for each grade, from reading comprehension and vocabulary to spelling and punctuation. Fifteen of the 100 lessons are challenge activities that prepare children for skills at the next grade level. Includes two 50-page books, for a total of 100 lessons. Details:Includes two 50-page books100 lessons on a variety of reading and language art skillsIncludes 85 2nd grade level activities and 15 challenge activitiesRequires 2 AAA batteries (not included)For ages 7 and up