Herbert P. Ginsburg, PhD, is the Jacob H. Schiff Emeritus Professor of Psychology and Education at Teachers College, Columbia University. He has conducted basic research on the development of mathematical thinking, with particular attention to young children, disadvantaged populations, and cultural similarities and differences. He has drawn on cognitive developmental research to develop mathematics curricula (Big Math for Little Kids) and storybooks for young children, tests of mathematical thinking, and video workshops to enhance teachers’ understanding of students’ mathematics learning. He has recently developed a model course on early mathematics education for use in colleges and universities. Also, he has created computer-based systems (MCLASS: MATH) for helping teachers to conduct basic clinical interviews to assess children's mathematical knowledge. With colleagues, he is now developing computer software, MathemAntics, and inter-active storybooks to foster young children’s (from 3 years to grade 3) mathematics learning. He holds a BA from Harvard University and his MS and PhD from the University of North Carolina, Chapel Hill.