Americans don't know enough about their own histories. Experts weigh in on what they should know and why.
A textbook distributed to Virginia's fourth graders states that African Americans served in the Confederate Army by the thousands. We talk about where this claim comes from and some books that might do a better job of educating our children.
We talk with Mark Oglesby, a high school history teacher, about some important, yet unknown, facts from U.S. history that he believes all his students ? and all Americans ? should be armed with. Author Kenneth Davis also joins in.