The family guide to sex and relationships

This is a comprehensive guide to sexual development and sexuality in all stages of life, from birth to old age. Easy-to-follow text, combined with color illustrations and step-by-step artworks, make this ideal for parents wanting to talk to children about sex, or for anyone with any sex-related question. The author has taught science, biology, and sex education in Great Britain and is the author of How Sex Works. More than 300 photos, artworks and diagrams.