Your Child's Development From 3 to 6 Months

This information describes the skills your child is likely to develop between the ages of 3 and 6 months.

Movement and Physical Development

  • Bears weight through legs and can bounce up and down when held in standing position.
  • When lying on tummy, can roll onto side or back.
  • Can sit with or without support.
  • Will reach for toys when lying on tummy.
  • Can turn over when lying on tummy.
  • Can bring hands to knees and feet.
  • Can hold a bottle.
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Social-Emotional and Self-Help Skills

  • Does not cry without a reason.
  • Coos when being spoken to.
  • Smiles.
  • Likes to play with people and will cry when playing stops.
  • Can swallow strained or puréed foods.
  • Recognizes a baby bottle.
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Learning, Thinking, and Problem Solving Skills

  • Enjoys repeating activity.
  • Begins to play with rattles.
  • Can find an object that is partially hidden.
  • Will respond to parent’s voice.
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Speech, Language, and Communication Skills

  • Cries in different ways to show hunger, pain, or tiredness.
  • Laughs, squeals, and coos.
  • Makes open vowel sounds like “aah” and closed vowel sounds like “ee.”
  • Will laugh when eyes are covered, for example during a game of peek-a-boo.
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What You Can Do to Help Your Child’s Development

Although your child is undergoing cancer treatment and may not feel energetic, it is still important to encourage movement, communication, and play as part of their daily routine. Here are some things you can do:

  • Make sure your child spends time on their tummy when they are awake.
  • Talk to your child by repeating sounds they have made.
  • Play peek-a-boo with your child.
  • Encourage your child to reach for nearby toys.
  • Encourage your child to kick by placing rattles or toys near their feet.
  • Play with your child while they are in a seated position.
  • Encourage your child to play with their hands together in front of their body.
  • Massage your child’s hands and feet.
  • Encourage your child to play with toys that have sounds and lights.
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Call Your Child’s Doctor if Your Child:

  • Has stiff legs.
  • Doesn’t push down with their legs when their feet touch a hard surface.
  • Can’t look straight ahead when lying on back.
  • Doesn’t reach for toys.
  • Doesn’t roll over.
  • Has difficulty bringing things to their mouth.
  • Doesn’t like to change positions.
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Contact Information

If you have questions about your child’s development, ask your child’s doctor if you need a referral to Memorial Sloan Kettering’s (MSK) Physical and Occupational Therapy

You can reach MSK’s Physical and Occupational Therapy Monday through Friday from 8:00 am to 6:00 pm at 212-639-7833.

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