Children enter their tween years around ages 9 to 12. Learn what to expect during these transformative years and how to help them navigate this time.
Privacy, trust & monitoring: 9-18 years
Adolescence - Wikipedia
Development Milestones for Your 18-Year-Old Child
Adolescent & Young Adult Development
Patterns in development – Conscious Creative Courageous Living
Developmental maps: early adolescence, Stepping stones
A new choice for parents of tweens and teens on - Blog
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Middle Adolescence: Teenage Developmental Stages
Pediatric & Teen Care - Inner City Health
Child Development Basics