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  1. 13-Year-Old Growth and Development Milestones - Parents

    Nov 6, 2025 · Read on to learn about the development of an average 13-year-old, including what to expect cognitively, physically, emotionally, and socially. Plus, learn how to keep your teen …

  2. Your Checkup Checklist: 13 Years Old - HealthyChildren.org

    Ready for your 13-year-old’s yearly medical exam? Feel prepared with these practical tips from the American Academy of Pediatrics (AAP).

  3. Your Son at 13: Milestones - WebMD

    Sep 22, 2024 · Son entering his teen years? Read up on the changes you can expect from your 13-year-old, and ways you can support him during this milestone year.

  4. What Is Normal Behavior for a 13-Year-Old Boy? - MedicineNet

    Dec 3, 2025 · Your 13-year-old boy is officially a teenager. Here is a closer look at the changes your son is going through in this year of early adolescence, including his developmental …

  5. Developmental Milestones for Teens (13–18 Years)

    Navigate the teenage years with confidence! Discover essential developmental milestones for 13- to 18-year-olds, from managing friendships and puberty to preparing for adulthood.

  6. Your 10–13-Year-Old Son: What to Expect | FindMyKids Blog

    Aug 13, 2025 · Pre-adolescence is the beginning of growing up. Boys start to grow taller, gain weight, experience voice changes, increased sweating, breakouts, and body hair growth. For …

  7. The Growing Child- Teenager (13 to 18 Years) - Stanford ...

    The teen years are a time of growth spurts, puberty changes, and emotional and social development. Here's what you need to know.