Beth Casey is Professor Emeritus of Applied Developmental and Educational Psychology at Boston College’s Lynch School of Education. She is also the senior author of the National Science Foundation (NSF) funded ‘Round the Rug Math series, six books for pre-k through grade 2 students, which teaches different areas of math in the form of adventure stories. She has an NSF grant examining the longitudinal effects of early home learning environments on girls’ math and spatial skills, and is presently following the 1st grade girls into 5th grade. She has published numerous articles in journals, including the Journal of Research in Mathematics Education and the Early Childhood Research Quarterly. Beth was a math script advisor for Curious George, as well as for a separate project for Universal Studios, and served as a consultant for Peep and the Big Wide World, CloudKid, and Portfolio Entertainment. She is on the Math Advisory Board of the PBS/CPB Ready to Learn Project (RTL). In addition, she worked as a math advisor for the RTL transmedia projects of the Cat in the Hat, Fizzy’s Lunch Lab, and SciGirls. Most recently, she served as a consultant to the University of Chicago, reviewing the new Pre-K Math Assessment that is being developed. Beth’s research interests include early childhood mathematics, how differences in thinking influence learning, and how gender differences in spatial ability impact success in mathematics.