When your toddler is happily stacking blocks beside another child but not actually playing with them, it can be easy to wonder: “Are they really playing” The answer is a big YES!

Children’s play develops in stages, and each stage plays an important role in how they learn, regulate emotions, build confidence, and eventually form friendships. What can look simple, repetitive, or even antisocial to adults is often deeply purposeful learning for young children.

In this post, we’ll gently unpack:

• How you can support your child’s play without pressure or worry

• Why play doesn’t look social at first

• The stages of play you’ll typically see between 18 months and 4 years

• What modern research tells us about why play matters so much

Why parents worry about play – and why that worry makes sense

Many parents quietly wonder things like:

• My child doesn’t play with other children, is that normal?
• Should they be sharing more by now?
• Why does my toddler just watch instead of joining in?

These worries usually come from a good place. We care deeply about our children’s happiness and future friendships, and it’s natural to compare what we see at playgroups, nurseries, or online.

If you’re specifically wondering whether playing side by side counts as real play, this post on parallel play and why it’s completely normal explains it in more detail.

Here’s the important point you need to take away: play is not a performance. Children aren’t meant to look social straight away. Before they can truly play with others, they need time to learn how to be around others.

What the stages of play actually are (a simple overview)

One of the earliest researchers to study play was Mildred Parten, whose work is still widely used today. While her research dates back to the 1930s, modern studies have expanded on her ideas and confirmed something powerful: play supports far more than social skills alone.

Children move through the following stages gradually, and not always in a neat order:

• Unoccupied play – exploring movements and sensations
• Solitary play – playing independently
• Onlooker play – watching others play
• Parallel play – playing alongside others
• Associative play – interacting loosely during play
• Cooperative play – playing together toward a shared goal

Children may move back and forth between stages depending on the environment, how they’re feeling, or who they’re with – and that’s completely normal.

1. Unoccupied Play (mostly babies, but can still show up later)

Even though this is more common in infants, toddlers sometimes dip back into this stage. They might wander, watch, or fiddle with toys without a clear goal.

✨ Why it matters: This seemingly random activity helps children explore and learn how their bodies work.

🎲 Play Ideas: Give them scarves, ribbons, or bubbles to watch and chase. Offer stacking cups or sensory bottles to explore freely.

2. Solitary Play (18 months–2 years)

At this stage, children love playing on their own; stacking blocks, banging on a drum, or flipping through a book. They aren’t ignoring others; they’re just focused on their own discoveries.

✨ Why it matters: Solitary play builds independence, creativity, and concentration.

🎲 Play Ideas: Wooden blocks, shape sorters, or nesting cups. Simple puzzles or chunky crayons and paper. Busy baskets with everyday items like spoons, cups, and fabric scraps.

3. Onlooker Play (around 2 years)

Your child might watch another child playing without joining in. They may comment or ask questions, but they’re not quite ready to jump in.

✨ Why it matters: Observation is learning. Watching helps children pick up new ideas and social cues.

🎲 Play Ideas: Set up a playdate where your child can sit nearby and watch. Model pretend play (feeding a doll, pushing a car) while they observe. Visit a playground or playgroup where they can watch other children.

If your toddler is spending lots of time in solitary, onlooker, or parallel play, they’re not behind – they’re building the foundations they need for later social play.

4. Parallel Play (2–3 years)

This is a big one for young children. You’ll often see two children sitting side by side, each playing with their own toy, sometimes even mimicking each other, but not truly interacting.

✨ Why it matters: This stage lays the groundwork for cooperation. Young children learn to be around others, share space, and copy play ideas.

🎲 Play Ideas: Set up two sets of blocks or cars side by side. Provide art supplies (crayons, stickers) so children can create next to each other. Water play with two tubs, each child having their own scoop or cup.

Parallel play is one of the most misunderstood stages of development — if this is the stage your child is in, you may find this deeper look at what parallel play really means for toddlers reassuring.

5. Associative Play (around 3 years)

Here, children start interacting more. sharing toys, commenting on each other’s creations, or loosely working on a task together. But there’s no clear ‘goal’ or rules yet.

✨ Why it matters: This stage encourages communication, problem-solving and flexibility.

🎲 Play Ideas: Set -up a playdough table where kids swap cutters and tools. Side-by-side pretend play, e.g. both making ‘food’ in a play kitchen. Building with blocks and chatting about what each person is making.

6. Cooperative Play (3–4 years and beyond)

This is where play becomes truly social. Children work together toward a shared goal e.g. building a fort, playing ‘house’, or creating rules for a game.

✨ Why it matters: Cooperative play develops teamwork, negotiation, empathy, and friendships.

🎲 Play Ideas: Pretend play with roles (shopkeeper and customer, doctor and patient). Building a train track or fort together. Group games like singing and doing the actions to “Ring a Ring o’ Roses” or simple scavenger hunts.

If you’re unsure how to support your child’s social play without pushing them before they’re ready, this guide on supporting social play without forcing it walks you through what actually helps.

What modern research tells us about play today

While Parten’s stages focus on social development, newer research shows play supports many areas of development at once:

• Brain development – Play strengthens neural connections that support language, problem-solving, memory, and self-control.
• Emotional growth – Through play, children process big feelings, practise coping with frustration, and build resilience.
• Learning through observation – Watching others play helps children understand social cues, routines, and new ideas, often before they’re ready to join in.
• Individual differences – Children develop at different rates. Some show cooperative play earlier, while others spend longer in parallel play. Neither is a problem. Others may linger in parallel play longer – and that’s completely normal.

What this means for you as a parent

If your child isn’t playing with other children yet, there’s no need to rush or worry. Supporting play doesn’t mean directing it or pushing children to interact before they’re ready. Instead, it can look like:

• offering open-ended toys
• providing time and space to play
• letting children observe without pressure
• joining in only when invited

Confidence grows before skills. When children feel safe and unpressured, social play develops naturally.

If you ever find yourself wondering “Am I supporting my child’s play properly?”, you’re not alone. In my free weekly newsletter, I share calm, clear guidance on toddler and preschooler development through play, with simple ideas you can use in real family life, no overwhelm, no pressure.I

👉 You can subscribe here to get gentle play support delivered to your inbox.

Karmal x

✅ Visit here for free resources and easy video tutorials!

✅ Connect with other parents and get support, join my free Facebook group here.

✅Grab your free guide of 5 Easy Activities to do with Your Toddler or Preschooler. You’ll get simple play ideas to support your child, without the overwhelm. Download your free guide here!