Get closer to becoming a hero with each exercise in this exciting mission! Designed for second graders. Plenty of practice - at two levels - with removable solutions. Compatible with all teaching materials. Includes a practical flap for use as a bookmark and a large sticker solution image for visible learning success. Engaging math problems with concrete real-life references for children. Addition and subtraction tasks up to 100, multiplication and division tasks, calculations with money, lengths, weights, and time, as well as statistics and probability. Includes information for parents and teachers on how to use the books and a learning diary to track individual progress.