i think 8 or 9 is too early, my daughter is 9 and i would not even consider discussing sex for a good few years…the thought of it scares me, no wonder our parents never discussed it with us.
i will discuss things like menstruation with her in the near future, she already knows what the boundaries are between boys and girls and naturally only has friends that are girls.
i think teaching children about being touched by others is something that needs to be drilled into them from age 4 onwards.
its important as parents that we maintain a healthy relationship with our kids so they have no problem communicating any worries or concerns with us.