I just happened to come across a blog - Bold and Free this evening that I am going to put in my favorites so I can check in often.
Jan is running a contest and will give a free copy of Teaching Your Child About Sex by Grace Ketterman, MD to the winner. It is a book that helps parents teach their children about sex. See her blog entries regarding the contest here and the book here.
I don't know much about the book, but its definitely a topic that all parents will have to discuss with their children at some point. I found this description at Christian Book Distributors:
Unsure about how or when to discuss "the birds and the bees" with your children? In her updated classic, renowned expert Dr. Ketterman equips you with the perfect words to explain the physical, emotional, and spiritual aspects of sex in age-specific increments - from infancy through adolescence. Now includes chapters on current issues such as sexually transmitted diseases and homosexuality.