Hmmm.... Forest kindergarten is Friluftslivbarnehage in Norwegian. These children in Oslo play outside in all weather for hours a day. Friluftsliv is the word for outdoor living and is essential to Norwegian culture.
Children belong outdoors. We know this intuitively, but now an extensive and ever-growing body of research supports it. Kids who spend time outside every day are healthier, happier, more creative, less stressed and more alert than those who don't. Several recent studies even show time in nature or green space helps reduce ADHD symptoms. Learning in nature is good for teachers and students.