Unlock Level 1 Listening, Speaking & Critical Thinking Student’s Book, Mob App and Online Workbook w/ Downloadable Audio and Video by N M White

Unlock Level 1 Listening, Speaking & Critical Thinking Student’s Book, Mob App and Online Workbook w/ Downloadable Audio and Video by N M White

Nancy C. Jordan is Principal Investigator of the Number Sense Intervention Project (funded by the Eunice Kennedy Shriver National Institute of Child Health and Human Development) as well as the Center for Improving Learning of Fractions (funded by the Institute of Educational Sciences). She is author or coauthor of many articles in mathematics learning difficulties and has recently published articles in Child Development, Journal of Learning Disabilities, Developmental Science, Developmental Psychology, and Journal of Educational Psychology. Dr. Jordan holds a bachelor's degree from the University of Iowa, where she was awarded Phi Beta Kappa, and a master's degree from Northwestern University. She received her doctoral degree in education from Harvard University and completed a postdoctoral fellowship at the University of Chicago. Before beginning her doctoral studies, she taught elementary school children with special needs. Dr. Jordan served on the Committee on Early Childhood Mathematics of the National Research Council of the National Academies.

Joseph J. Glutting, Ph.D., is a professor in the School of Education at the University of Delaware. He is a quantitative psychologist. Dr. Glutting specializes in applied multivariate statistics and test construction. He developed four nationally standardized measures of intelligence, occupational interest, and attention-deficit/hyperactivity disorder. Dr. Glutting's research has been supported by the Institute of Education Sciences and the National Institutes of Health. He has published more than 100 juried journal articles and book chapters.

Nancy Dyson has been in education for more than 30 years as both a teacher and the director of a parent cooperative school. She recently completed her doctoral degree in education at the University of Delaware with a research focus on students struggling with mathematics.