The National Science Education Standards have highlighted the importance of active learning and reflection for contemporary scientific methods in K-12 classrooms, including the use of models. Computer modeling and visualization are tools that researchers employ in their scientific inquiry process, and often computer models are used in collaborative projects across disciplines. The goal of this project was to develop and field-test a module that used a computer model to teach marine sciences content in an applied, inquiry-based, and collaborative manner. Students used an estuarine transport model to explore the question of how circulation patterns affect planktonic organisms, demonstrating the interdisciplinary interaction of physics and biology. Our experience suggests that computer models, when used for inquiry, can help foster students' understanding of the nature of science and critical-thinking skills. emphasized the importance of providing students with authentic science experiences through active inquiry. They also highlighted the importance of using and understanding the nature of models as conceptual representations that are developed and tested. Computer models and simulations are important tools in modern scientific inquiry and are cornerstones of many interdisciplinary, collaborative projects. Therefore, introducing students to computer modeling is an important component of understanding modern scientific techniques.Interactive illustrations are now available for a variety of topics, such as molecular genetics (Marbach-Ad et al., 2008) and chemical bonds (Frailich et al., 2009). These computer modeling tools have been shown to significantly improve students' understanding of abstract ideas by making them more tangible (Harris et al., 2009). However, these examples represent only one of the diverse ways that scientists utilize computer models.Scientists conduct experiments with computer models to understand phenomena and to generate predictions. For instance, a circulation model of Chesapeake Bay helped scientists study variations in flow patterns (Li et al., 2005). This model also enabled scientists to test hypotheses regarding how changes in weather and/or land use would affect these flow patterns and how organisms are subsequently dispersed (North et al., 2010). Using computer models in an inquiry-based manner requires (1) understanding the concepts of variables and model limitations, (2) formulating testable hypotheses, (3) collecting and analyzing data (model output), and (4) drawing conclusions from the data (de Jong, 2006). Therefore, computer modeling can potentially equip students with scientific process skills essential to understanding scientific concepts.In addition to being a tool for scientific inquiry, computer models can also provide students the opportunity to work collaboratively and across disciplines. Working collaboratively and in an interdisciplinary manner are essential skills for scientists (Sung et al., 2003). To date, several guided-inquiry activities that utilize computer mod...