Child Development

7 articles to explore

15-month-old toddler taking first steps with parent support indoors

15 Month Old Milestones: What Your Toddler Should Be Doing (and When to Worry)

At 15 months, development spreads across a wide range—from walking and language to fine motor and social skills. This guide breaks down what’s typical for 15 month old milestones and which variations

Jeehoo Jeon·May 10, 2026·12 min read

Korean mother and toddler reviewing baby growth chart percentiles together in bright living room

Child Development

Baby Growth Chart Percentiles: What They Actually Mean for Your Child’s Development

A baby growth chart percentile shows how your child’s measurements compare to others the same age an

Jeehoo Jeon·13 min read

Korean mother and baby exploring fine motor skills with wooden blocks on a light wooden floor

Child Development

Fine Motor Skills Activities for Babies and Toddlers by Age: A Month-by-Month Guide

Fine motor skills activities for babies don’t require fancy toys — they unfold through everyday expl

Jeehoo Jeon·15 min read

Korean mother holding toddler by window, illustrating separation anxiety and secure attachment in babies

Child Development

Separation Anxiety in Babies: When It Starts and How to Actually Handle It

Separation anxiety in babies is not a behavioral problem—it’s a developmental milestone reflecting h

Jeehoo Jeon·12 min read

Korean mother engaging with toddler during speech play on light wooden floor

Child Development

Toddler Speech Delay: Signs to Watch and What Actually Helps

Toddler speech delay means language is developing more slowly than expected, but the range of normal

Jeehoo Jeon·16 min read

Korean mother listening to baby babble on wooden floor in bright, minimalist living room

Child Development

When Do Babies Start Talking? Speech Milestones From Birth to 3 Years

Babies communicate from day one—but not with words. Learn when babies start talking, what babbling m

Jeehoo Jeon·14 min read

Korean mother holding newborn on couch observing baby milestones

Child Development

Baby Milestones by Month: Your Complete 0-12 Month Guide

A milestone is a skill that typically emerges within a predictable age range — but that range often

Jeehoo Jeon·14 min read