Famous educator Maria Montessori said it best when she remarked, "Play is children's work. It's what they do to make sense of the world."

In today's high-tech and fast-paced society, it can be easy to over-schedule children and feel like they need structured activities beginning with infancy to promote stability. However, childhood development experts disagree with that philosophy and encourage parents to remember that children need time and space to play freely – in fact, their physical development depends on it.

Here are the different – and necessary – types of play you can expect your child to experiment with from infancy through the preschool years.

Adults play a key role in developing successful play in children from birth through the first two years of a child's life. Infants need interaction from adults, says Barrie Moen, mother of three daughters and owner and operator of Playwise Preschool Academy in Huntersville, N.C. She says that by watching reactions from adult caregivers, they learn how to get desired reactions from both people and objects.

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