Puberty and Sex
When approaching middle school I think it is often helpful for kids and parents to have more information about puberty and sex, and that it is best to acquire this information somewhere besides the internet.
Meg Hickling is a nurse who wrote a great book that I think is helpful for kids and their parents,
and I also very much like Paulette Bourgeois' books, (yes of Franklin the Turtle fame) - one for boys and one for girls -