A set of 3 books to enjoy science and biographies in 10 minutes each. I purchased these used books for extensive reading, and they are in relatively good condition. There are some minor scuffs and tears, but no significant damage. They are perfectly readable, so I recommend them for extensive reading. - Titles: Biographies You Can Read in 10 Minutes (no cover) Stories You Can Read in 10 Minutes Why? How? Science Stories - Grade Level: 4th Grade Thank you for looking.