This is a 2-book lot from the Step Into Science series. (Intended for children 7-9 years old.) Both are brand new books that have received minor damage. The two books that are included are as follows— More Power to You! The Science of Batteries and Magnets (1992, first Random House edition, 40 pages). This one has a few small spine creases and scratches. Up, Up, and Away! The Science of Flight (1992, first Random House edition, 40 pages). Small spine creases and scratches.