This is a set of 5 books. Read by two boys. There is some wear and tear, such as folded pages. "10-Minute Biographies for 2nd Graders" and "Science Stories for 2nd Graders" do not have covers. These are used books stored at home. Thank you for your understanding. --- A series of short stories and biographies for elementary school students. - Title: 10-Minute Biographies for 1st Graders - Title: 10-Minute Biographies for 2nd Graders - Title: 10-Minute Stories for 3rd Graders - Title: Why? How? Science Stories for 2nd Graders - Title: Why? How? Science Stories for 3rd Graders