David Randle, Ph.D., joined the American Museum of Natural History’s Education Department after a 15-year career as a science teacher in the New York City public schools. He is currently the Senior Manager of Professional Development and works on programs for teachers through Seminars on Science, the Museum’s online graduate level professional development program, and in face-to-face programs through the Museum’s Gottesman Center for Science Teaching and Learning. He is also faculty in the Museum’s Masters of Arts in Earth Science program.