Your 11+ year-old-son is feeling the daily effects of raging hormones. This book from Anatomy For Kids answers questions asked by boys in this age group: Why do I smell different now? Why is my skin changing and what is a pimple? Why is my voice getting deeper? What is a growth spurt? Where do sperm come from and where do they go? What are a wet dream and a spontaneous erection? Younger boys might prefer the first puberty book in the series, I’m A Boy, My Changing Body, for 8-10-year-olds by also available on Amazon.