How toddlers learn to share and play together

Why toddlers play side-by-side before playing together, how sharing skills actually develop, and when peer-play struggles are worth a professional look.

Two young Indian brothers laugh together while riding a shared plastic toy car on a street in New Delhi.

In short

At 2, toddlers often play side by side without really playing together. Around age 3, they start to play with other children, take turns and share. As they grow, helping them find words for what they want can ease the frustration. Is your toddler not meeting many communication milestones for their age? ASHA recommends a speech-language evaluation. Language gaps often show up first as friction during play. A small share of toddlers — about 5% — have sensory processing differences (how the body handles noise, touch, or crowding). This can make group play feel overwhelming. Mention it to your pediatrician if that pattern fits your child.

Sourced from AAP / HealthyChildren.org, ASHA (American Speech-Language-Hearing Association), NCBI/PMC peer-reviewed research · Updated August 15, 2026

Two toddlers sit inches apart, each carefully stacking their own blocks. Neither seems to notice the other's tower rising alongside theirs. A parent watching might wonder: shouldn't they be playing together by now? The answer, almost always, is that they're doing exactly what toddlers are supposed to do at this stage. This side-by-side activity is called parallel play. It isn't a toddler failing to socialize. It's socializing, just in its earliest and most necessary form.

The American Academy of Pediatrics (AAP) describes this shift. At 2, children don't interact well with other kids, even when playing side by side, unless they want a toy. Once they reach age 3, they'll actually play with other children instead of just playing side by side. They learn to take turns and share toys in small groups. But how and when that shift happens varies from child to child. That shift doesn't happen overnight, and it isn't a straight line. It's built through hundreds of small, sometimes messy moments: a grabbed toy, a wordless standoff, a first tentative 'my turn.' This guide walks through what happens as toddlers move from parallel to social play. It also covers how sharing and conflict skills take shape, and the signs that suggest it may be worth bringing in extra support.

What is parallel play, and is it a problem?

Parallel play is exactly what it sounds like. Two or more toddlers are occupied with similar toys or activities, positioned near one another, but not directly interacting. They may glance at each other, copy what the other is doing, or briefly hand over an object. But there's no shared plan, no back-and-forth conversation, no joint goal.

It's tempting for parents to read this as toddlers 'not playing together yet,' as if something is missing. In reality, parallel play is active social learning. A toddler watching a peer stack cups, bang a drum, or push a truck is absorbing a lot. That includes how another child moves, what noises and expressions mean, and what happens when someone else's tower falls. They're building comfort with being near other children before they're asked to team up with them.

Think of parallel play as a toddler's apprenticeship. It lays the groundwork for skills used later, when toddlers start actually playing together — things like tolerating shared space, noticing another child's actions, and early imitation. The AAP says two-year-olds learn best how to behave around other people by getting plenty of trial runs. From about age 3, children gradually stop competing as much and cooperate more when playing with friends. Exactly when that happens varies from one child, and one personality, to the next.

How does talking help my toddler play with others?

If parallel play is the observation phase, language is often the tool that unlocks the next one. Turning a side-by-side moment into a shared one means a toddler has to communicate something: 'my turn,' 'can I have that,' 'no,' 'look,' or just a pointed gesture paired with a sound. Each of those small communications is a toddler trading a physical action — grabbing, pushing, crying — for a social one.

This is why speech and social development are so closely linked in the toddler years. A child who has the words — or even reliable gestures and approximations — to ask for a toy, protest a swap, or invite a peer to play has a real alternative to conflict. A child who doesn't yet have that vocabulary is far more likely to reach for the toy, or for a shove. That's simply because they have no other way to make their point. As children reach preschool age, the AAP suggests telling them to "use your words" to deal with problems instead of acting out. It also suggests helping your child find words for their feelings and wants, so they don't feel frustrated.

This is also worth paying close attention to rather than waiting it out. The American Speech-Language-Hearing Association (ASHA) advises that if a toddler is not meeting many of the communication milestones expected for their age, parents should seek an evaluation from an ASHA-certified speech-language pathologist. So much of sharing, turn-taking, and working out conflict depends on a toddler's ability to communicate. Because of that, a communication delay often shows up first as friction in play. A toddler who seems to 'not get' sharing may actually be a toddler who doesn't yet have the words to ask for what they want.

Why won't my toddler share?

Sharing looks simple from the outside — hand over the toy, take turns, everyone's happy. But it asks a lot of a toddler's still-developing brain. It takes impulse control (resisting the urge to grab something desirable). It also takes a grasp of ownership and turn-taking, and enough emotional regulation to tolerate the disappointment of waiting. None of those skills are fully formed in the toddler years. They're built gradually, through repetition and modeling, not through a single lesson.

That's why 'Mine!' is less a character flaw and more a status update. A toddler clutching a toy and shouting isn't necessarily being selfish. They may genuinely be unable, in that moment, to hold onto the idea that they'll get the toy back later. They may also not grasp that another child wanting it doesn't threaten their own claim to it.

Because this skill develops at such different paces, there's no single 'right' age by which a toddler should be a confident sharer. Some toddlers hand things over easily. Others need far more practice, more adult help, and more time. Rather than forcing a toy out of one child's hands to give to another, it generally helps more to narrate what's happening ('You're playing with the truck. She wants a turn too. She can have it when you're done'). Offering choices, and using turn-taking games, can also make the idea of 'later' more concrete.

Could sensory differences be affecting play?

Most toddlers move through the ordinary bumps of learning to share and play alongside peers, even when it's slow or uneven. But for some children, play struggles trace back to something less obvious: how their body handles everyday sensory input like noise, touch, movement, or crowding.

Research on sensory processing shows that about 5% of children between birth and age 3 have sensory processing differences. These differences are linked to reduced social skills and less participation in play. In practice, that might look like a toddler who gets overwhelmed in a noisy group setting, or who avoids the physical closeness that group play often involves. It can also look like a toddler who has a harder time joining in even when they seem to want to.

This isn't something a parent needs to diagnose on their own. It's also far from the most common explanation for a toddler who seems hesitant around peers — most of what looks like reluctance is simply typical development at its own pace. But if play struggles are persistent, seem tied to sensory triggers, or come with other concerns, it's reasonable and worthwhile to raise with a pediatrician, who can help figure out whether further evaluation makes sense.

Frequently asked questions

Is parallel play a sign my toddler is behind socially?

No. Parallel play means playing near other children without directly interacting. The AAP notes that two-year-olds don't interact well with other kids, even when playing side by side. Once they reach age 3, children start to actually play with each other. So playing alongside others is expected at this age, not a delay.

When should I expect my toddler to actually start sharing?

There's no single age that applies to every child. Sharing depends on skills like impulse control and an understanding of turn-taking. Those develop at very different paces. Consistent modeling and simple scripts tend to help more than pressuring a toddler to hand things over immediately.

My toddler grabs, hits, or bites during playdates. Is that normal?

These behaviors are common when a toddler doesn't yet have the words to express frustration or ask for a turn. Staying close during play, naming feelings, and offering simple phrases to use instead of grabbing can help. These behaviors typically ease as communication and self-regulation develop.

How does speech development affect how my toddler plays with others?

Communication is often the bridge from parallel to social play. Words let a toddler negotiate turns and resolve small conflicts instead of grabbing or pushing. If a toddler isn't meeting many of the communication milestones expected for their age, the American Speech-Language-Hearing Association (ASHA) recommends an evaluation with a certified speech-language pathologist. Language gaps often show up first as friction during play.

Could sensory sensitivities be behind my toddler's reluctance to join group play?

For a small number of toddlers, yes. Research indicates about 5% of children under age 3 show sensory processing differences. These are linked to reduced social skills and reduced participation in play activities. If a toddler consistently seems overwhelmed by noisy or crowded play settings, it's worth mentioning to a pediatrician.

Sources

  1. Once they reach age 3, your child will be much less selfish than they were before. … Now they'll actually play with other children, interacting instead of just playing side by side. — AAP / HealthyChildren.org
  2. Children this age can seem more concerned about their own needs and act selfishly. They may refuse to share things that interests them, and they do not interact well with other children, even when playing side by side—that is, unless they want a toy or object from a playmate. — AAP / HealthyChildren.org
  3. As this happens, they'll gradually stop competing as much and cooperate more when playing with friends. Your child will learn to take turns and share toys in small groups. — AAP / HealthyChildren.org
  4. Say to your child "use your words" to deal with problems instead of acting out. … Help your child with the appropriate words to describe their feelings and desires so that they don't feel frustrated. — AAP / HealthyChildren.org
  5. Your two-year-old will best learn how to behave around other people by being given plenty of trial runs. — AAP / HealthyChildren.org
  6. ASHA advises that if a toddler does not meet many of the communication milestones expected for their age range, parents should seek an evaluation from an ASHA-certified speech-language pathologist. — ASHA (American Speech-Language-Hearing Association)
  7. Research on sensory processing indicates that about 5% of children between 0 and 3 years of age exhibit sensory processing differences, and sensory processing disorders are linked to reduced social skills and reduced participation in play activities. — NCBI/PMC peer-reviewed research

Educational information, not medical advice — always consult your doctor.

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