The premise of the 15th ICMI Study is that teachers are key to students' opportunities to learn mathematics. What teachers of mathematics know, care about, and do is a product of their experiences and socialization, together with the impact of their professional education. The Professional Education and Development of Teachers of Mathematics assembles important new international work- development, research, theory and practice - concerning the professional education of teachers of mathematics. As it examines critical areas to reveal what is known and what significant questions and problems warrant collective attention, the volume also contributes to the strengthening of the international community of mathematics educators. The Professional Education and Development of Teachers of Mathematics is of interest to the mathematics education community as well as to other researchers, practitioners and policy makers concerned with the professional education of teachers.

February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index

Alfred A. Marcus and Mazhar Islam examine how demographic changes introduce new challenges for businesses, with a focus on how the world today is divided between disproportionately old and young nations. Taking a broad international perspective, the book illustrates how demography affects underlying conditions in nations, presenting the risks and opportunities for businesses as well as a set of concrete obligations they owe to the nations in which they operate.