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Research Experiences for Undergraduates (Supplements) NSF 04-584 The Research Experiences for Undergraduates (REU) program supports active research participation by undergraduate students in any of the areas of research funded by the National Science Foundation. REU projects involve students in meaningful ways in ongoing research programs or in research projects specially designed for the purpose. This announcement features two flexible mechanisms for support of student research: REU Supplements and REU Sites. REU Supplements may be included in proposals for new or renewal NSF grants or cooperative agreements or as supplements to ongoing NSF-funded projects. REU Sites are based on independent proposals to initiate and conduct undergraduate research participation projects for a number of students. REU Sites projects often focus within a single discipline and/or single academic department; however, interdisciplinary or multiple-department proposals with a strong intellectual focus are also encouraged, as are proposals with international dimensions. Undergraduate student participants supported with NSF funds in either Supplements or Sites must be citizens or permanent residents of the United States or its possessions. Each October, the Division of Environmental Biology (DEB) sends all principal investigators with a DEB grant, which will be active until at least the following June, an electronic Dear Colleague Letter. The letter announces the availability of REU supplements, contains information about the application procedure, and points out that the DEB-wide deadline for REU supplement requests is Feb 1. Other Divisions in BIO (DBI, IOB and MCB) accept requests for REU supplements at any time. Principal investigators should contact their cognizant program officer for additional guidance. Contact Information NOTE: The Directorate for Biological Sciences has a formal activity supporting Research Experiences for Teachers (RET) See the RET Dear Colleague letter NSF 02-090 for details.