These two-book sets with included Hot Dots pen provide children with 100 lessons on a variety of math skills appropriate for each grade, from place value and math facts to telling time and identifying money values. Plus, each set includes 15 challenge activities that prepare children for skills at the next grade level. The nitty-gritty: Two 50-page books, total of 100 lessons Hot Dots pen Requires 2 AAA batteries (not included)
