Sandy Wagner Ph.D. (Domain Expert)
For over 20 years Dr. Wagner taught mathematics, science, computer science, and teacher education from 7th grade through college. His other careers have included software manager, mathematics textbook author, and designer of online classes. Recently he was delighted to return to mathematics, his first true love, and to helping teachers explore ways to improve teaching and learning with technology.
Jim taught secondary math from the East Coast to Hawaii and back to West Virginia. He worked with teachers and students from kindergarten through high school as a math/science specialist. Jim also spent several years creating and managing statewide math testing programs. Along the way Jim published many articles in math and science teacher journals, and he edited secondary math textbooks. Jim has a special interest in hands-on and project-based math learning.
Geoff Ruth teaches chemistry, AP Chemistry, geology, and environmental science at the Urban School of San Francisco. Before coming to Urban, he taught science at Leadership High School for five years, and wrote chemistry curriculum at Lawrence Hall of Science. Geoff earned a geology degree from Carleton College, and tries to integrate many different science and math topics into his classes. When not teaching, he enjoys bicycling, rock climbing, woodworking, and exploring the Sierra.
Kurt Rosenkrantz is a curriculum specialist at a website specializing in interactive science and math simulations. He spent eight years teaching middle school and high school science in California and New York. He has a bachelor’s degree in Earth Science from Harvard and a master’s degree in Geology from the University of Cincinnati (specializing in invertebrate paleontology). He grew up in Vermont and currently resides in Chapel Hill, North Carolina.
Chell Roberts is the Chair of a new multidisciplinary engineering program at Arizona State University’s Polytechnic campus. He received a PhD in industrial engineering from Virginia Tech, a master’s degree in industrial engineering from the University of Utah and a bachelor’s degree in mathematics from the University of Utah. Dr. Roberts has published over 70 technical articles, participated in over $2 million dollars of research, provided consulting services to many companies, and served on many national conference organization committees, national review boards, and technical committees. Dr. Roberts’s primary research and teaching interests are in the area of manufacturing automation, computer simulation, and engineering education.
Graduated San Jose State University BA – 1967 MA – 1968 Taught chemistry and physics in Santa Clara Unified School District 1967 – 2007.
Colleen O’Donnell Oppenzato has worked in the field of educational publishing since 1999, developing mathematics curricula for grades 2-11. Before that, Colleen participated in Teach for America and worked as a teacher of exceptional children at the middle school level. She has also worked as a fifth-grade teacher. She is currently completing a master’s degree in Cognitive Studies in Education at Teachers College, Columbia University.
