See also:

• Kids and Teens: School Time: Science: Living Things: Animals: Mammals: Humans: Reproductive System  (7)

• All About Puberty [ Kids-Teens ] + Voice cracking? Clothes don't fit? Puberty can be a confusing time, but learning about it doesn't have to be. Read all about it in this article for kids.
• BBC: Puberty [ Teens-Mature Teens ] + Interactive images display male and female bodies as they change during puberty.
• Boys and Puberty [ Kids ] + Learn why girls may be taller, when muscles start to develop, where hair starts to grow, and why sweat can smell bad.
• It's a Girl Thing [ Teens-Mature Teens ] + About the physical and emotional changes that take place at puberty. Talks about menstruation. Includes a message board.
• KidsHealth: Growing Up [ Kids-Teens ] + Information about changing bodies and minds and the kinds of issues that older kids face.
• Preteen Health Talk [ Kids ] + Site by the Palo Alto Medical Foundation dealing with topics of interest written by and for other teens and tweens. Also includes movie and book reviews.
• Puberty [ Teens ] + What it is, when it happens, and common concerns.
• Puberty Information for Boys [ Teens-Mature Teens ] + Explains the changes that happen in a boy's body during puberty. Includes voice, skin, hair, body size, and emotional changes. [PDF]
• Spiderbytes: Puberty [ Teens ] + Information about puberty in point form and some quizzes.
• Teen Health website: Boys and Young Men [ Teens-Mature Teens ] + Offers answers to common questions that boys and young men ask about how the body changes during puberty.
• Your Changing Voice [ Kids ] + Find out how the voice works and why it changes during puberty.