Author Biography
John Allen graduated from the University of Oklahoma. As a partner in BBE Associates, Ltd., he has worked in the educational publishing field for more than twenty-five years. He has authored or co-authored many books in the areas of science and mathematics. About Our Technical EditorLaurie P. Callihan, Ph.D., is a postdoctoral associate for the Promoting Science among English Language Learners (P-SELL) project in the Steinhardt School of Culture, Education, and Human Development at New York University. Her research areas within science education include policy, diversity, and teacher professional development. She has fifteen years of classroom science teaching experience with expertise in diverse classroom settings. Dr. Callihan has authored a variety of curricula, books, and academic materials in the K-20 science area.
