This volume contains selected papers presented by students at URC* 2010 (Undergraduate Research in Computer Science - Theory and Applications). The papers cover a wide range of topics, including algorithm design (in particular, the design of heuristic algorithms for the maximum-leaf spanning tree problem, and the analysis of speed scaling algorithms), programming language design (in particular, language based security, the use of effect systems for automating model extraction, and results on adaptation languages using visual environments) and applications to ray tracing optical phenomena and...