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Playing in nature while coming into contact with dirt and insects has an impact on child development. "By using all five senses to experience the outdoors, children are able to feel that they are a part of nature," says Michio Kawasaki, specially appointed professor of developmental psychology at Takada Junior College. Different from standardized man-made things that are sold as products, nature and living things that are a part of it have a form and a shape -- they move, they have a smell and a certain feeling when you touch them with your hands and even have a taste as well. Surrounded by the diversity of nature, children keep developing daily. "Humans are a part of nature. I think through being connected to nature, we can be surprised or moved, comforted or soothed," Kawasaki explains.