Guide by age Development reference table by age
Developmental milestones by month (motor, language, social)
Newborn development In the newborn period, you'll see primitive reflexes like sucking and grasping, and baby often gazes at faces about 20–30 cm away. See details → 1 month development Around one month, eye contact increases and baby often lifts their head a little during tummy time. See details → 2 months development Around two months, baby shows a social smile at people and often coos when content. See details → 3 months development Around three months, head control begins, and baby often laughs out loud and brings their hands together at the chest. See details → 4 months development Around four months, baby twists to try rolling and often grabs things within reach to bring to the mouth. See details → 5 months development Around four months, baby twists to try rolling and often grabs things within reach to bring to the mouth. See details → 6 months development Around six months, baby sits with support, rolls both ways, and often babbles with consonants. See details → 7 months development Around six months, baby sits with support, rolls both ways, and often babbles with consonants. See details → 8 months development Around six months, baby sits with support, rolls both ways, and often babbles with consonants. See details → 9 months development Around nine months, baby sits alone, starts crawling, and pulls up on furniture to stand. See details → 10 months development Around nine months, baby sits alone, starts crawling, and pulls up on furniture to stand. See details → 11 months development Around nine months, baby sits alone, starts crawling, and pulls up on furniture to stand. See details → 12 months development Around age 1, baby takes first steps and starts saying meaningful first words. See details → 15 months development Around age 1, baby takes first steps and starts saying meaningful first words. See details → 18 months development Around 18 months, walking steadies and runs are attempted; vocabulary grows and some join two words. See details → 24 months development At two years, toddlers speak two-word sentences, climb stairs, and kick a ball. See details → 36 months development At three years, children converse in sentences, play with peers, and ride a tricycle. See details →