“Visual Math: The Function Web Book” by Yerushalmy, M., Katriel, H., and Shternberg, B. (2002). Published by CET, Ramat Aviv, Israel. www.cet.ac.il/math/function/english

This article is a review of the above web (or interaction) book. The review considers the contribution of this book with respect to the authors' own stated aspirations to support the teaching and learning of functions. These somewhat theoretical conclusions are hopefully given enhanced meaning through discussion with a trainee teacher. I conclude that the design of the web book has much to offer anyone working in this field. Teachers as well will find it a wonderful resource though they may need to work quite hard at motivating children's work and interpreting the many rich tasks to make them more accessible to "ordinary kids".[PUBLICATION ABSTRACT]