sentences:  Queene Coonley was trained as a social worker and kindergarten teacher at the Detroit Normal School (now Wayne State University) and was impressed by the theories of Friedrich Fröbel, who believed children's early education should be an extension of their lives at home.Fröbel's theories captured the three main principles of what John Dewey would later call the "kindergarten attitude", which applied not just to kindergartners but to children of all ages.Dewey wrote that the primary role of the school is to train children in cooperative living, the root of all learning is the activity of the child and not external material, and directing children's spontaneous impulses towards maintaining the collective life of the school is how they become prepared for adult life.