Colleen N. Thrailkill, Ed.D., began teaching elementary school in 1974. Over a long career, until she retired in 2010, she taught kindergarten, first grade, second grade, and third grade in the cla...lihat lebih banyakColleen N. Thrailkill, Ed.D., began teaching elementary school in 1974. Over a long career, until she retired in 2010, she taught kindergarten, first grade, second grade, and third grade in the classroom. In 1999, she earned a Doctor of Education degree in curriculum and instruction and worked as a resource teacher for elementary-level gifted and talented students for the rest of her career.lihat lebih sedikit