You move a rattle slowly from side to side as it jingles, and your baby practices following it with their eyes.

HearingStart · 0–4 months

Following the rattle

You move a rattle slowly from side to side as it jingles, and your baby practices following it with their eyes.

To do with your baby in the first 4 months. It works on: hearing, visual movement and visual focus. You'll need: rattle.

In the app, one activity a day for their age

What do I need?

  • Rattle

How do I do it?

  1. Set up the space

    Lay your baby on their back on a comfortable surface. Bring your face about 30 cm (12 in) from theirs, so they can see you clearly.

  2. Move the rattle

    Pick up something that makes a sound (a rattle, a bell or a musical toy). Move it slowly from left to right in front of their eyes, about 20–25 cm (8–10 in) from their face.

  3. Add the sound

    Keep the sound going as you move it, so they see and hear it at the same time. Watch their eyes: at first they follow it in little jumps, then more and more smoothly.

  4. Stop when they tell you

    When they look away or start to fuss, leave it for today. That's their way of telling you they've had enough.

Take care

Keep a firm grip on the rattle the whole time, so it can't slip and fall on their face.

What are they learning?

As they follow the rattle, they practice moving their eyes from side to side without losing sight of it, and the sound helps them connect what they see with what they hear. Around 3 months, many babies start reaching for the rattle, even if they can't grab it yet.

  • Movement
  • Hands
  • Senses
  • Language
  • Feelings and connection
  • Thinking and play
  • Hearing

    Connects the sound of the rattle with what they see

  • Visual movement

    Follows an object moving from side to side with their eyes

  • Visual focus

    Keeps their eyes on the rattle without losing track of it

What the research says

  1. Newborns prefer their mother's voice

    DeCasper & Fifer · 1980
  2. How human eyesight develops

    Braddick & Atkinson · 2011
  3. How visual attention develops in babies

    Colombo · 2001
See all 6 references
  1. DeCasper AJ, Fifer WP. Of human bonding: newborns prefer their mothers' voices. Science. 1980;208(4448):1174-1176. doi:10.1126/science.7375928 doi.org/10.1126/science.7375928
  2. Muir D, Field J. Newborn infants orient to sounds. Child Development. 1979;50(2):431-436. doi:10.2307/1129419 doi.org/10.2307/1129419
  3. Braddick O, Atkinson J. Development of human visual function. Vision Research. 2011;51(13):1588-1609. doi:10.1016/j.visres.2011.02.018 doi.org/10.1016/j.visres.2011.02.018
  4. Rosander K. Visual tracking and its relationship to cortical development. Progress in Brain Research. 2007;164:105-122. doi:10.1016/S0079-6123(07)64006-0 doi.org/10.1016/S0079-6123(07)64006-0
  5. Colombo J. The development of visual attention in infancy. Annual Review of Psychology. 2001;52:337-367. doi:10.1146/annurev.psych.52.1.337 doi.org/10.1146/annurev.psych.52.1.337
  6. Courage ML, Reynolds GD, Richards JE. Infants' attention to patterned stimuli: developmental change from 3 to 12 months of age. Child Development. 2006;77(3):680-695. doi:10.1111/j.1467-8624.2006.00897.x doi.org/10.1111/j.1467-8624.2006.00897.x

Reviewed by Javier Atance Ibar, PhD in Education

More for 0–4 months

  1. Touch and fine motor skills

    After-bath massage

    After the bath, you give them a head-to-toe massage, and they discover each part of their body through your hands.

    Calm · 5 steps
  2. Gross motor skills

    Tummy time over a roll

    You rest their chest on a rolled-up towel, and from a little higher than the floor, they try lifting their head to look around.

    Active · 5 steps
  3. Vision

    Playing with the mirror

    You show them their reflection in a mirror, and they discover a face that smiles and moves right along with them.

    Calm · 5 steps
The app

One activity a day, for their age and what you've done together.

And around every activity, your baby's whole day in one place.

  • Their day at a glance

    Sleep, feeds and diapers in one tap, and their week summed up on Today. You choose what to log.

  • Their sleep rhythm

    After a few days of logs, it learns how long they stay awake and shows their expected naps and bedtime.

  • Milestones and first words

    The milestones for their age, from the CDC, and their first words, each with its date.

  • Shared between you iPhone only

    Invite your partner: whatever one of you logs, the other sees straight away on their iPhone.

  • Without opening the app

    The timer keeps going on the Lock Screen even when you close the app. With widgets, you log in one tap.

  • To the check-up, with it all

    Their 7, 14 or 30-day PDF report, appointments and your country's vaccine schedule.

  • No account
  • Your data on your phone and in your iCloud
  • 184 activities from birth to 3
  • 14 languages

iPhone, iPad and Android · 7-day free trial on the yearly plan

PapaKoala's Today screen with Leo's day: when he woke up, his expected naps, feeds and diapers.