These unique workbooks combine the fun of the Mercer Mayer’s Little Critter characters with solid McGraw-Hill curriculum. The graphics and illustrations that fill each of the 32 pages effectively reinforce the concepts taught. Clear instructions allow for independent learning. Answer keys are provided so parents can check their child’s progress. Perforated pages allow the exercises to be removed for display or to be placed in a progress file. These lively workbooks introduce and reinforce math skills at appropriate developmental levels. The PreK and K levels focus on early math concepts, such as patterns, number recognition, and shapes, while the first and second grade books feature instruction on addition, subtraction, time, money, and measurement. Based on solid curriculum, these books are perfect for children who want to get a head start on math at home.