15 Books That Can Help Explain Menstruation to Tweens

Image Source: https://www.amazon.com/I'm a Girl, My Changing Body ($11) prepares children as young as 8 and 9 for the changes their body will experience during puberty. This one doesn't cover periods as in-depth as the followup book that's meant for tweens 11 to 12, but it does cover hormones, reproduction, and physical changes that happen during puberty.