8 min read · For babies aged 9–10 months
Between nine and ten months, many babies become more active and intentional explorers.
Your baby may no longer wait for an object to be placed directly into their hands. They may turn towards it, reach across the body, move closer, pick it up and repeat the same action several times to see what happens.
Sitting may become more stable, movement across the floor may increase and both hands may begin working together in more coordinated ways. Your baby may shake, bang, turn, drop and search for objects while also showing greater interest in familiar pictures, sounds, people and words.
These changes do not happen in the same order for every baby. Some babies crawl on their hands and knees, while others roll, pivot, shuffle, move backwards or spend more time preparing to move. The goal is not to encourage one specific method or accelerate a milestone, but to provide safe opportunities for your baby to explore.
What typically changes between 9 and 10 months?
Development varies, but during this period you may notice changes in how your baby moves, plays, communicates and responds to familiar people and objects.
Your baby may begin to:
- sit more steadily without using the hands for constant support;
- turn the upper body while sitting;
- move out of sitting towards the tummy or side;
- pivot, roll, shuffle, crawl or prepare for movement;
- reach more intentionally for a chosen object;
- transfer an object between the hands;
- hold one object in each hand;
- bang two objects together;
- shake, turn, push and drop objects repeatedly;
- look for an object that has fallen or become partly hidden;
- show interest in familiar pictures;
- babble using repeated sounds;
- imitate simple sounds or facial expressions;
- look towards you when their name is called.
A baby does not need to show every behaviour on this list. Skills often appear gradually, disappear for a while and return as your baby focuses on another area of development.
Greater mobility on the floor
At nine and ten months, your baby may begin covering more distance than you expect.
Movement can take many forms. Your baby may:
- pivot in a circle while lying on the tummy;
- push backwards with the hands;
- pull forward using the arms;
- roll towards an interesting object;
- shuffle while sitting;
- rock on the hands and knees;
- move between sitting and the tummy;
- crawl on the hands and knees.
Not every baby crawls in the same way, and some babies do not use traditional hands-and-knees crawling at all.
Rather than teaching your baby how to crawl, prepare a safe floor space that allows free movement. Place one interesting object a short distance away and allow your baby to decide whether and how to move towards it.
Avoid repeatedly moving the object farther away when your baby approaches. The activity should create curiosity, not frustration.
Sitting, turning and preparing to move
Sitting becomes more useful for play when your baby can turn, shift weight and reach without immediately losing balance.
From sitting, your baby may begin to:
- rotate the upper body towards a toy;
- lean onto one hand while reaching with the other;
- move an object across the centre of the body;
- lower onto one hip;
- move towards the tummy;
- attempt to return to sitting from another position.
These transitions are often less tidy than adults expect. Your baby may wobble, pause, change direction or lower the body slowly to the floor.
Allow small, safe adjustments instead of continually straightening the body. Stay close enough to prevent a hard fall, but give your baby time to organise the movement.
Intentional reaching and choosing objects
Earlier in infancy, your baby may have reached for whichever object was closest. At nine and ten months, reaching can become more selective.
Your baby may look between two objects, choose one and adjust the body to reach it. They may continue trying after an unsuccessful attempt or push away an object that is not interesting.
This does not mean you need to offer a large selection. Too many toys can make it difficult to focus.
Try placing two or three clearly different objects within the play area:
- one directly in front of your baby;
- one slightly to the left or right;
- one a little farther away but still realistically reachable.
Observe which object your baby chooses and how they organise the movement. Reaching, shifting weight, changing direction and trying again are all part of the activity.
Why does your baby repeat the same action?
At this age, repetition is one of the main ways babies gather information.
Your baby may repeatedly:
- drop a toy from the same position;
- spin the same moving part;
- shake an object;
- bang it against the floor;
- push it away and move towards it again;
- transfer it from one hand to the other;
- look for it after it disappears.
Although the action appears identical, your baby may be noticing small differences each time.
They may be exploring questions such as:
- Will the same movement create the same result?
- Does a stronger push make it move faster?
- Does the sound change on another surface?
- Where does the object go when it falls?
- Can I make it happen again?
- Will the adult return the object to me?
Repetition helps an experience become more predictable. Your baby does not need a detailed explanation. They learn by acting, observing and trying again.
Understanding simple cause and effect
Cause-and-effect learning begins when your baby notices that one action leads to a result.
For example:
- pushing creates movement;
- shaking creates sound;
- tapping changes the sound according to the surface;
- dropping makes an object fall;
- turning changes the part of an object that can be seen;
- reaching towards an adult may lead to a response.
The Wooden Cause and Effect Spinner offers a clear version of this experience. When your baby pushes or turns it, the movement of the hand creates a visible result.
Place the spinner in front of your baby on a stable surface. Demonstrate one slow movement if needed, then pause.
Avoid spinning it continuously for your baby. The most meaningful part of the experience is discovering that their own movement can make it turn.
Your baby may initially touch, tap or hold the spinner without creating a full rotation. These are still useful forms of exploration.
Shaking, banging, turning and dropping
Babies do not always use objects in the way adults expect. At nine and ten months, the action can be more interesting than the intended purpose of the toy.
Shaking helps your baby connect movement with sound.
Banging provides information about hardness, resistance and the sound created by different surfaces.
Turning reveals different shapes, edges, textures and visual details.
Dropping allows your baby to watch movement through space and discover where an object goes.
Provide lightweight, durable objects and use a safe floor surface. Remove heavy items, breakable objects and anything with sharp edges or loose parts.
The Shake & Discover Rattle can still be useful at this stage. Your baby may now experiment with different strengths, directions and surfaces rather than producing only an accidental sound.
Using both hands together
Two-handed coordination does not always mean that both hands perform the same movement.
Your baby may use:
- one hand to hold an object while the other explores it;
- both hands to turn a larger object;
- one hand to support the body while the other reaches;
- one hand to pass an object into the other;
- each hand to hold a different object;
- both hands to bring an object towards the mouth.
The Hand-to-Hand Discs invite this kind of open-ended exploration. Their connected shape allows your baby to grasp one side, bring the second hand towards the other side, rotate the object and change grip.
Offer the discs near the centre of your baby’s body. Allow your baby to decide whether to use one hand, both hands or the mouth during supervised play.
There is no correct way to hold or transfer them. The value lies in the different movements the shape makes possible.
Early object permanence
Object permanence is the growing understanding that a person or object can continue to exist even when it is not fully visible.
At nine and ten months, you may notice that your baby:
- looks towards the floor after dropping an object;
- searches for a toy that rolled partly out of sight;
- lifts the edge of a cloth;
- follows an object moving behind another object;
- anticipates your return during peekaboo;
- reaches towards a partly hidden toy.
This understanding is still developing. Your baby may search for an object one day and show no interest the next.
Try a partly hidden object
Place a familiar toy in front of your baby and cover only part of it with a light cloth. Leave a large section visible.
Wait to see whether your baby looks, reaches or pulls the cloth. If they do not respond, slowly reveal the object.
The goal is to create a simple experience of disappearing and returning, not to test whether your baby understands the task.
Interest in pictures and familiar objects
Pictures become more meaningful when they are connected with familiar words, sounds and experiences.
Your baby may:
- look closely at one image;
- touch or pat the picture;
- hold and turn a card;
- look between the image and your face;
- smile when hearing a familiar animal sound;
- vocalise while looking at the picture;
- show a preference for a familiar card.
Use the Animal Discovery Cards one or two at a time.
Show one image, name the animal and make one simple sound:
“Dog. Woof.”
Then pause.
Your baby may look, touch, smile, babble, turn away or reach for the card. Each of these responses gives you information about whether they want to continue.
There is no need to ask your baby to identify the animal or choose the correct card. At this stage, the activity is about shared attention, familiar language and responsive interaction.
Paper or printed cards should remain under direct adult supervision and away from the mouth.
Babbling and imitating sounds
Babbling may become more varied during this period. Your baby may repeat sound combinations such as “ba-ba-ba”, “da-da-da” or “ma-ma-ma.”
These sounds do not always carry a specific meaning yet. They are part of experimenting with the lips, tongue, voice and rhythm of language.
Your baby may also:
- copy the rhythm of your speech;
- try to repeat a simple sound;
- use a sound to gain your attention;
- pause after vocalising;
- respond when you imitate them;
- combine sounds with facial expressions or gestures.
When your baby makes a sound, look towards them and respond. You can repeat the sound once and wait.
This creates a simple back-and-forth exchange:
Baby: “Ba-ba.”
Adult: “Ba-ba.”
Pause.
Your response does not need to be complicated. Responsive exchanges help your baby experience communication as something shared between two people.
Responding to their name
Many babies begin looking towards a familiar person when their name is called, although the response may not yet be consistent.
Your baby may respond by:
- turning the head;
- moving the eyes towards you;
- pausing an activity;
- smiling or vocalising;
- moving towards you.
A baby who is deeply focused on an object, tired or surrounded by noise may not respond immediately.
Say your baby’s name once in a calm voice, then wait. Avoid repeating it rapidly or using it as a test.
You can naturally connect the name with what your baby is doing:
“Luca, you found the dog.”
“Mia, the spinner moved.”
How to organise the play space
As mobility increases, the play space needs to provide both freedom and safety.
Choose a firm floor area with enough space for your baby to turn, reach and change position.
Before play:
- remove small household objects from the floor;
- move cables and chargers out of reach;
- check underneath nearby furniture;
- secure unstable furniture;
- block access to stairs;
- remove sharp, heavy or breakable objects;
- keep plastic packaging and bags completely out of reach.
Offer two to four developmentally appropriate objects rather than filling the entire space with toys.
A simple play setup for 9–10 months
- Place the Wooden Cause and Effect Spinner in front of your baby.
- Place the Hand-to-Hand Discs slightly to one side.
- Keep one Animal Discovery Card in your own hand.
- Add the Shake & Discover Rattle later rather than presenting every object at once.
Changing one object at a time can help your baby notice the difference and choose where to direct their attention.
Six simple play ideas for babies aged 9–10 months
1. Spin and pause
Place the Wooden Cause and Effect Spinner within comfortable reach. Demonstrate one slow turn if necessary, then wait.
Allow your baby to touch, push, stop and repeat the movement independently.
2. Transfer and turn
Offer the Hand-to-Hand Discs near the centre of your baby’s body.
Observe whether your baby grasps one side, brings in the second hand, turns the discs or transfers the object between the hands.
3. Drop and find
Give your baby a lightweight object while sitting on the floor. When it falls, pause and allow your baby to look towards it.
Place it back within reach if needed. Avoid turning the activity into an endless retrieval game if your baby is no longer interested.
4. Find the partly hidden toy
Cover part of a familiar object with a light cloth. Leave enough visible to make the activity easy to notice.
Wait before revealing it. Follow your baby’s response rather than asking them to find it.
5. Animal sound exchange
Show one Animal Discovery Card, name the animal and make one simple sound.
Pause and respond if your baby looks, smiles, touches the card or vocalises.
6. Shake, stop and repeat
Offer the Shake & Discover Rattle and allow your baby’s movement to create the sound.
When the movement stops, leave a moment of quiet. Your baby may shake it again, turn it or tap it against the floor.
Follow your baby’s cues
Meaningful play depends less on completing an activity and more on noticing how your baby responds.
Signs that your baby may want to continue include:
- reaching towards the object;
- leaning or moving closer;
- repeating an action;
- looking between you and the object;
- smiling or vocalising;
- remaining calmly focused;
- searching for the object after it moves.
Your baby may need a pause when they:
- repeatedly turn away;
- push the object aside;
- stop reaching or exploring;
- begin moving stiffly or less smoothly;
- rub the eyes or yawn;
- become tense, fussy or tearful;
- lose balance repeatedly;
- move towards you for comfort.
Stopping is part of responsive play. Your baby does not need to finish an activity for the experience to be valuable.
Safety for an increasingly mobile baby
A baby who was unable to reach an object yesterday may reach it today. Mobility can change quickly, so prepare the environment before your baby begins moving confidently across the floor.
Check floors and low surfaces every day for:
- coins;
- button batteries;
- magnets;
- beads;
- buttons;
- pen caps;
- small toy parts;
- hair accessories and elastic bands;
- pieces of food;
- plastic packaging;
- pet food and small pet toys.
Also:
- secure stairs with correctly installed safety gates;
- attach unstable furniture to the wall;
- keep hot drinks away from table edges;
- remove hanging tablecloths and accessible cords;
- cover or block unsafe electrical access points;
- keep toys away from the cot and sleep space;
- inspect toys for damage before use;
- supervise cards, wooden objects and moving toys directly.
Floor play is usually safer than play on a bed, sofa or other raised surface. A mobile baby can move towards an edge very quickly.
When should you seek professional advice?
Development follows a broad range, and one individual behaviour does not provide a diagnosis.
Speak with your baby’s paediatrician or another qualified healthcare professional if:
- your baby has lost a skill they previously used;
- one side of the body is used much less than the other;
- your baby appears unusually stiff or very floppy;
- they have difficulty controlling the head or body while sitting;
- they do not reach for or hold objects;
- they rarely show interest in people, sounds or objects;
- they do not respond to sounds or familiar voices;
- you have concerns about hearing, vision, movement or communication;
- something about your baby’s development worries you.
Look at your baby’s overall pattern of movement, interaction and progress rather than focusing on one isolated skill. Raising concerns early can help you access appropriate advice and support.
Frequently asked questions
Should my 9-month-old already be crawling?
No. Some babies crawl on their hands and knees, while others roll, pivot, shuffle, move backwards or prepare for movement in another way. Development varies, and traditional crawling is not the only way a baby may move across the floor.
Why does my baby keep dropping toys?
Dropping allows your baby to explore movement, sound, distance and what happens when an object disappears from the hand. Repetition also helps them discover whether the same action creates the same result.
Is it normal for my baby to bang toys together?
Yes. Banging safe, lightweight objects together is a common way to explore sound, movement and material differences. Stay close and remove anything heavy, damaged or unsuitable for infant play.
Should my baby respond to their name every time?
No. Responses may still be inconsistent, especially when your baby is concentrating, tired or in a noisy environment. Say the name once and allow time for a response.
How many toys should I offer at once?
Two to four clearly visible, developmentally appropriate objects are usually enough. A smaller selection can make it easier for your baby to focus, choose and explore.
Explore play for babies aged 7–12 months
The Owloo Grab & Grow Play Kit for 7–12 Months includes play experiences for two-handed coordination, sensory exploration, repetition, shared attention and early cause-and-effect discovery.
The aim is not to accelerate milestones. It is to make it easier to offer simple, developmentally appropriate experiences during everyday floor play.
The Owloo approach
At nine and ten months, meaningful play often begins with a simple question:
“What happens when I do this?”
Offer a safe object, allow your baby to act and leave enough time for repetition.
Place it within reach. Let your baby act. Pause before helping.
Written by Tina Krapez, Owloo Co-founder & COO
Tina Krapez is the Co-founder and COO of Owloo, where she helps create thoughtful play solutions and educational resources that support parents through their baby’s early development. Her work focuses on turning developmental knowledge into simple, practical guidance families can use in everyday play.
Sources and further reading
- Centers for Disease Control and Prevention — Milestones by 9 Months
- Centers for Disease Control and Prevention — Milestones in Action: 9 Months
- American Academy of Pediatrics — Movement Milestones in Babies 8 to 12 Months
- American Academy of Pediatrics — Cognitive Development in Infants: 8 to 12 Months
- Harvard Center on the Developing Child — Serve and Return
- American Academy of Pediatrics — Safety for Your Child: 6 to 12 Months
