3 1/2 – 5 1/2 Months


  • Turns head to locate sound
  • Listens intently to sounds made with own mouth
  • Practices sounds when alone
  • Gurgles and coos to show pleasure
  • Makes raspberries or similar sounds


  • Investigates small objects with hands and fingers
  • Brings objects to mouth to explore
  • Accurately bats dangling objects and repeats activity
  • Looks at person or object for at least one minute


  • Responds to familiar faces by calming, smiling, vocalizing, and/or vigorously moving arms and legs
  • Responds to attention and affection
  • Laughs
  • Anticipates eating upon seeing the bottle or breast
  • Stops crying briefly when parents approach


  • Turns on to either side
  • Lifts head and chest using forearms for support
  • Sits with support
  • Holds toys with both hands
  • Stretches legs and kicks at objects
  • Reaches and grasps items of interest
  • Holds head steady in supported sitting position
  • Turns from stomach to back or back to stomach

Suggested Books:

  • Who says Quack? by J. Smith & P Dunlap Grosset
  • Big Red Barn by Margaret Wise Brown
  • Baby’s First Words by L. Wik

Suggested Activities:

  • Mobiles
  • Kicking objects
  • Pat Mat
  • Balls in a Bowl