This is a lot of five (5) lightly used, paperback children’s math books. Included are the four Math in Nature books (Counting On Fall, Sorting Through Spring, Sizing Up Winter, & Shaping Up Summer) and Sir Cumference and the Viking’ Map. The four Math in Nature books measure 10.5” x 8.5”. Sir Cumference and the Viking’s Map: A Math Adventure measures 9.5” x 8.5”. All books are in like-new condition and are 32 pages long. The item has been stored in a smoke-free, pet-free location. We will ship it via USPS.