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Developmental Milestones by Age: A Parent's Quick Reference

Key motor, language, and social milestones from 2 months through 5 years, and how we screen for them at well visits.

By Rezia Divaker, MDJuly 26, 2026Medically reviewed July 26, 2026

Milestones are guideposts, not deadlines. Children reach them on their own timeline, and our job at every well visit is to look at the whole picture rather than a single skill.

Infancy: 2 to 12 months

  • 2 months: smiles at you, holds head up briefly during tummy time.
  • 4 months: coos, laughs, holds a toy, pushes up on elbows.
  • 6 months: rolls both ways, babbles, reaches for objects.
  • 9 months: sits without support, responds to their name.
  • 12 months: pulls to stand, waves, says one or two words with meaning.

Toddler years: 15 months to 3 years

  • 15 months: takes a few steps, uses one or two words besides mama and dada.
  • 18 months: walks well, points to show you something, tries simple pretend play.
  • 2 years: two-word phrases, runs, follows simple two-step directions.
  • 3 years: short sentences, plays alongside other children, pedals a tricycle.

Preschool: 4 to 5 years

  • 4 years: tells simple stories, draws a person with two to four body parts, hops on one foot.
  • 5 years: speech is understandable to strangers, counts to ten, dresses independently.

How we screen

We use standardized developmental screening at the 9-, 18-, and 30-month visits and autism-specific screening at 18 and 24 months, per American Academy of Pediatrics guidance. Screening is a conversation, not a test your child can fail.

When to call Divaker Pediatrics

Our Mount Dora office is here for questions big and small. Call 352-383-8386 to schedule a visit, or use the healow patient portal to send a message to our team. If your child has a medical emergency, call 911.

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