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(An Article by March of Dimes)
During the first year of life, your baby will grow and develop at an amazing speed.
Her weight will double by 5 to 6 months, and triple by her first birthday. And she is constantly learning.
Major achievements—called developmental milestones—include rolling over, sitting up, standing and possibly walking. And your heart will likely melt at the sound of her first “mama” or “dada.”
No two babies are exactly alike. Your baby will develop at her own pace. Most babies reach certain milestones at similar ages. However, it's not unusual for a healthy, “normal” baby to fall behind in some areas or race ahead in others.
The following milestones are only guidelines. Your baby's health care provider will evaluate your baby's development at each well-baby visit. Remember: Always talk to your child's health care professional if you think your baby is lagging behind.
If your baby was born prematurely (before 37 weeks of pregnancy), you need to look at the milestone guidelines a little differently. The age at which your baby is expected to reach various milestones is based on her due date, not her birthday. So if your baby was born two months early, she will most likely achieve milestones two months later than the guidelines below predict.
By the end of their first month, most babies:
Make jerky, quivering arm movements
Bring hands near face
Keep hands in tight fists
Move head from side to side while lying on stomach
Focus on objects 8 to 12 inches away
Prefer human faces over other shapes
Prefer black-and-white or high-contrast patterns
Hear very well
Recognize some sounds, including parents' voices
By the end of their third month, most babies:
Raise head and chest when lying on stomach
Support upper body with arms when lying on stomach
Stretch legs out and kick when lying on stomach or back
Push down on legs when feet are placed on a firm surface
Open and shut hands
Bring hands to mouth
Grab and shake hand toys
Follow moving object with eyes
Watch faces closely
Recognize familiar objects and people at a distance
Start using hands and eyes in coordination
Begin to babble and to imitate some sounds
Smile at the sound of parents' voices
Enjoy playing with other people
May cry when playing stops
By the end of their seventh month, most babies:
Roll over both ways (stomach to back and back to stomach)
Sit up
Reach for object with hand
Transfer objects from one hand to the other
Support whole weight on legs when held upright
Develop full-color vision and mature distance vision
Use voice to express joy and displeasure
Respond to own name
Babble chains of consonants (ba-ba-ba-ba)
Distinguish emotions by tone of voice
Explore objects with hands and mouth
Struggle to get objects that are out of reach
Enjoy playing peek-a-boo
Show an interest in mirror images
By their first birthday, most babies:
Sit without assistance
Get into hands-and-knees position
Crawl
Pull self up to stand
Walk holding onto furniture, and possibly a few steps without support
Use pincer grasp (thumb and forefinger)
Say “dada” and “mama”
Use exclamations, such as “oh-oh!”
Try to imitate words
Respond to “no” and simple verbal requests
Use simple gestures, such as shaking head “no” and waving bye-bye
Explore objects in many ways (shaking, banging, throwing, dropping)
Begin to use objects correctly (drinking from cup, brushing hair)
Find hidden objects easily
Look at correct picture when an image is named
By their second birthday, most children:
Walk alone
Pull toys behind them while walking
Carry large toy or several toys while walking
Begin to run
Kick a ball
Climb on and off furniture without help
Walk up and down stairs while holding on to support
Scribble with crayon
Build tower of four blocks or more
Recognize names of familiar people, objects and body parts
Say several single words (by 15 to 18 months)
Use simple phrases (by 18 to 24 months)
Use two- to four-word sentences (“want snack”)
Follow simple instructions
Begin to sort objects by shapes and colors
Begin to play make-believe
Imitate behavior of others
Show growing independence