Karen Sellins

Written by CK-12 Foundation on February 14, 2009
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Karen Sellins

Dr. Karen Sellins received her B.S. in Microbiology from the Ohio State University and her Ph.D. from the University of Colorado Health Sciences Center. She has taught at the undergraduate and graduate levels and even volunteers with 2nd and 4th graders. She is currently a part-time Instructor of Microbiology at Front Range Community College, Larimer Campus and the Resource Developer for Skyline High School in Longmont, Colorado.


George Patmor

Written by CK-12 Foundation on February 14, 2009
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George Patmor

George Patmor, Ph.D., taught high school biology and chemistry for 26 years before joining the faculty of Murray State University (Murray, KY) to prepare future teachers. He has been involved in science textbook review and evaluation as secondary science department chair and on state textbook adoption committees. He has developed online science and education courses. Currently, he serves as an education consultant on curriculum and instruction projects — locally, nationally, and internationally.


William Nolan

Written by CK-12 Foundation on February 14, 2009
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William Nolan

William is a middle school math teacher in Upstate New York working with students from diverse backgrounds. He has a Bachelors degree in mathematics from SUNY Geneseo and Master’s degree in education from Columbia University. William has an extensive background writing and reviewing math education content for the publishing industry.


Lisa Morici

Written by CK-12 Foundation on February 14, 2009
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Lisa Morici

Lisa A. Morici received her Ph.D. in Infectious Diseases and Immunity from the University of California at Berkeley. She is currently an Assistant Professor of Research in the Department of Microbiology and Immunology at Tulane University School of Medicine in New Orleans, LA. Dr. Morici specializes in the study of host-pathogen interactions in pulmonary bacterial infections, such as those caused by Mycobacterium tuberculosis and Pseudomonas aeruginosa, with the ultimate goal of developing novel chemotherapeutics or vaccines against these organisms.


Harold Lawrance

Written by CK-12 Foundation on February 14, 2009

Harold Lawrance

Having taught high school mathematics for 14 years, Harold eventually left the classroom to work as a math writer. He is a published textbook author and has developed curricula for major school districts. Harold currently works as a math content specialist from his home in Oregon.


Susan Hansen

Written by CK-12 Foundation on February 14, 2009
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Susan Hansen

Susan has been teaching for 7 years. She is a native of Santa Clara Valley in California. Susan graduated from U.C. Berkeley with a B.S. in Chemical Engineering, and she holds a M.S. in Electrical Engineering from Santa Clara University. After 20 years in industry, Susan discovered the joy of working with kids, and made a career change to teaching. In her free time, she enjoys reading, sewing, hiking, camping, gardening, and travel. She lives in California with her

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Craig Freudenrich

Written by CK-12 Foundation on February 14, 2009

Craig Freudenrich

Craig Freudenrich, Ph.D., is a freelance science writer. He earned a B.A. in biology from West Virginia University and a Ph.D. in physiology from the University of Pittsburgh School of Medicine. He has over 25 years experience in biomedical research, science education, and science writing.


Marcia A. Firmani

Written by CK-12 Foundation on February 14, 2009
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Marcia A. Firmani

Craig Freudenrich

Education:
2002 Ph.D., Microbiology, University of California, Berkeley.
1994, MSPH, Tropical Medicine, Tulane University School of Public, Health and Tropical Medicine.
1991 B.S. Medical Technology, Marist College
Current Position:
Assistant Professor; University of Wisconsin, Milwaukee, Department of Health Sciences
Research Interests:
My labs major aims are to study the molecular genetics and epidemiology of Mycobacterium tuberculosis strains that are better able to survive within the host macrophage.


Scott Dossa

Written by CK-12 Foundation on February 14, 2009

Scott Dossa

Having taught for 20 years, I have had experience teaching a wide variety of courses and ability levels. I am currently teaching Oceanic Biology and Advanced Chemistry at David Douglas High School in Portland, Orego


Sarah Cohen Christopherson

Written by CK-12 Foundation on February 14, 2009

Sarah Cohen Christopherson

Sara earned a B.A. in biology at Oberlin College and a M.S. in science education at the University of Wisconsin (UW) – Madison. When she isn’t writing and editing science textbooks, consulting for the Wisconsin Center for Educational Research, lecturing for Introductory Botany at UW, or working with K-12 students in UW science programs, she might be lolling around, gardening, or baking bread.