Play is the way babies and children develop their sense of self, sense of the world, and sense of where they fit in. It starts with you, and – as children grow – widens to include playing with others and with toys or objects.

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For FathersPlaying with your child is one of the most wonderful things about being a parent. It's also a vital part of the way babies and children grow and learn.
The time you spend just having fun together:
Research tells us that a child's environment and experiences – especially during the first three years – strongly influences her development.
Newborns and babies
Your baby thinks of you as her most important play buddy. From birth, the carer that spends the most time with your child is the person that she looks to and wants to play with most. She'll want to play with you and to experience new things with you. And she'll look to you for guidance on what's OK and safe to try out – often with just a quick glance at you to gauge your facial expression.
Toddlers
As your toddler's focus of the world expands, she'll play more with other children. Your toddler is dipping a toe into the world of friends, as she starts to understand that other children are independent too. Between now and preschool age, your child is likely to want to spend more time playing with other children. This doesn't mean she won't still want to play with you – she'll want to play with you through much of her childhood.
Play at this age is about starting to explore relationships with others. From about 14 months of age, you might notice that your toddler plays side-by-side with other children, but not always with them. This is called parallel play, and it's completely normal. By about the age of three your toddler will start to want to play with – rather than beside – other children. This is all simply part of exploring the world and developing self-esteem and confidence along the way. Your toddler might also let you know that she really likes playing with a particular friend or two. She may not understand the nuances of relationships, or remember how to share, but she's on her way to finding out how these things work.
Preschoolers
Your preschooler wants to play with other children. By the time your child is four or five years of age, she'll want to play with friends as much as she wants to play with you. Play unlocks the world of social relations for your child – a journey that lasts until adulthood! Your child is learning about getting along with peers. Play is how this happens. Some very important personal development happens at the same time: your child is getting to know herself. She's developing her 'concept of self', and where she fits in – as a result of play and playing with other children.
Research suggests that the building blocks for a lifetime of self-esteem are set in place during the terrifically important period of social and personal growth that takes place in the preschool years.
School-age children
For school-age children, peer relationships are it. You're still an important play buddy, but by now your child certainly looks to play with other children as much as she does with you. This shift will continue as she matures. You'll still be the person she turns to for support and help when she needs it, but relationships with other children the same age are the main focus. You child really wants to fit in, and to understand how she fits in with the wider world, and play is again the catalyst for exploring these areas.
All you need to get started is you and your child, whether your child is a newborn or heading to school, or any age in between.
Manning-Morton, J. & Thorp, M. (2003). Key times for play: The first three years. Philadelphia: Open University Press.
McArdle, P. (2001). Children's play. Child: Care, Health and Development, 27(6), 509-514.
Rubin, K.H., Bukowski, W. & Parker, J.G. (1998). Peer interactions, relationships and groups. In W. Damon & N. Eisenberg (eds), Handbook of child psychology, vol 3: Social, emotional and personality development (5th ed). New York: Wiley & Sons.
Thomson, R.A. (1998). Early sociopersonality development. In W. Damon & N. Eisenberg (eds), Handbook of child psychology, vol 3: Social, emotional and personality development (5th ed). New York: Wiley & Sons.