Acquisition of complex arithmetic skills and higher-order mathematics concepts / edited by David C. Geary, Psychological Sciences, University of Missouri, Columbia, MO, United States, Daniel B. Berch, Curry School of Education, University of Virginia, Charlotesville, VA, United States, Robert J. Ochsendorf, Directorate for Education and Human Resources, National Science Foundation, Arlington, VA, United States, Kathleen Mann Koepke, Eunice Kennedy Schriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD, United Sates. London, United Kingdom ; San Diego, CA, United States : Academic Press is an imprint of Elsevier, 2017