1342 NOTICES OF THE AMS VOLUME 60, NUMBER 10 ematics: Its Theory and Practice (H. F. Fehr, (ed.), Washington, D.C., National Council of Teachers of Mathematics, pp. 228–370. Margret A. Hjalmarson and Heidi Diefes-Dux (2008), Teacher as designer: A framework for teacher analysis of mathematical model-eliciting activities, Interdisciplinary Journal of Problem- based Learning, Vol. 2, Iss. 1, Article 5. Avail- able at http://dx.doi.org/10.7771/1541– 5015.1051. John Sweller, R. Clark, and P. Kirschner (2010), Teaching general problem-solving skills is not a substitute for, or a viable addition to, teaching mathematics, Notices of the American Mathematical Society, Vol. 57, No. 10, November 2010. http://www.ams.org/notices/201010/ rtx101001303p.pdf the world, including institutions in Germany, the United States, Belgium, Canada, Spain, and Italy. Professor Raggi taught modern algebra at all levels to many generations of students in Mexico. In particular, he had four Ph.D. students. Raggi was author or coauthor of five books that are promi- nently used in universities throughout Mexico. As he traveled constantly and taught at many places throughout Mexico, Raggi’s commitment to the Sweller et al. (2010) state that problem solving cannot be taught independently of basic tools and basic thinking. Over time, students build up a rep- ertoire of problem-solving techniques. Ultimately, the difference between someone who is good and someone who is bad at solving nonroutine problems is not that the good problem solver has learned to solve novel, previously unseen prob- lems. It is more the case that, as students increase their expertise, more nonroutine problems appear to them as routine. References Mary Dolciani, S. L. Berman, and J. Freilich (1962), Modern Algebra, Book 1, Houghton Mifflin Co. Boston, MA. Ken B. Henderson and R. E. Pingry (1953), Prob- lem solving in mathematics, The Learning of Math- Professor Francisco Federico Raggi Cárdenas passed away June 12, 2012, in Mexico City. Profes- sor Raggi was born in Mexico City in 1940. He ob- tained his undergraduate degree from Universidad Nacional Autónoma de México (UNAM), a master’s degree from Harvard, and a doctorate from UNAM. In 1962 he joined the Institute of Mathematics of UNAM, where he worked until his passing. He held visiting positions in universities throughout In Memory of Professor Francisco Federico Raggi Cárdenas María José Arroyo, Rogelio Fernández-Alonso González, Sergio R. López-Permouth, José Ríos Montes, and Carlos Signoret María José Arroyo is professor of mathematics at Uni- versidad Autónoma Metropolitana Iztapalapa. Her email address is mja@xanum.uam.mx. Rogelio Fernández-Alonso González is professor of math- ematics at Universidad Autónoma Metropolitana Iztapa- lapa. His email address is rojo99@prodigy.net.mx. DOI: http://dx.doi.org/10.1090/noti1052 Sergio R. López-Permouth is professor of mathematics at Ohio University. His email address is lopez@ohio.edu. José Ríos Montes is professor of mathematics at Universi- dad Nacional Autónoma de México. His email address is jrios@matem.unam.mx. Carlos Signoret is professor of mathematics at Universidad Autónoma Metropolitana Unidad Iztapalapa. His email address is casi@xanum.uam.mx.