The Fantastic Body by Howard Bennett is a book about the human body that actually includes the reproductive system (most human body books exclude it).
This is a great book to have if you have a child who is super curious about bodies and how they work and grow. The fact that it includes the reproductive system is a bonus, as most of these style books exclude it. There are lots of lovely images, throughout the book, and the author is a paediatrician, so the content is very age-appropriate and easy to understand.
This one includes diagrams of the male and female reproductive organs. It also talks about the hormones and what happens with puberty.
Sexual intercourse is talked about but it is a very vague description and is talked about with a focus on conception ie how a baby starts biologically.
The Fantastic Body by Howard Bennett is ideal for children between the ages of 8 – 12 years of age.
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You can find more books like this in my list of Sex Education Books for Children.
You can also watch a video review below.