Jean Durgin Harlan, PhD, taught child development at Ohio University. She is the author of Science Experiences for the Early Childhood Years, Kindergarten Science, and Science As I...lihat lebih banyakJean Durgin Harlan, PhD, taught child development at Ohio University. She is the author of Science Experiences for the Early Childhood Years, Kindergarten Science, and Science As It Happens. Retired from her clinical psychology practice, Harlan lives in Columbus, Ohio. She has five children and eleven grandchildren.lihat lebih sedikit