June 14, 2015
June 14, 2015
June 17, 2015
K-12 & Pre-College Engineering
26.359.1 - 26.359.21
Collaborative Problem Solving using a Cloud-based Infrastructure to Support High School STEM Education (RTP, Strand 1)With the introduction of the next generation science standards into the high school curriculum,students are expected to employ critical thinking and problems-solving skills while engagingwith challenging STEM problems and concepts. To support STEM learning and development ofproblem-solving skills, we have developed a web- and server-based implementation of C3STEM– the Challenge-based Collaborative Community-center STEM learning environment. Thechallenges ground STEM instruction and learning in real-world applications to provide studentsboth a focus and a motivation for learning and problem solving. C3STEM uses transportation as areal-world domain to define STEM problems for students to solve. It also provides acollaborative environment for learning 21st century social and collaboration skills as studentswork together to decompose complex problems into parts and then combine partial solutions togenerate the best solution they can for the problem. The C3STEM system comprises two primarylearning environments: (1) the Computational Thinking through Simulation and Modeling(CTSiM) environment that allows students to build computational models of vehicles and trafficoperations using visual programming, and (2) the Cloud-based, Collaborative, Scaled-upModeling (C2SuMo) environment in which students apply the concepts they learned in CTSiM toscaled-up traffic flow problems, such as designing traffic light cycles to optimize traffic flow forlocal streets.We have extended our preliminary work on C3STEM in a number of ways: (1) enhanced andextended the basic simulation units in CTSiM, where students use fundamental knowledge ofphysics and math to develop models of vehicle movement and driver behavior; (2) redesignedthe C2SuMo environment to improve the accessibility of the interfaces for traffic simulationexperiments; and (3) introduced functionality for collaborative problem solving that allowsstudents to engage with C2SuMo while collaborating in a Google Hangout. We present resultsfrom two studies that included 62 Chattanooga, TN 11th- and 12th-grade students and 26 10th-grade students from a STEM outreach program in Nashville, TN. Our primary research questionsrevolved around: (1) assessing the usability of the CTSiM and C2SuMo components of thesystem; (2) establishing the extent to which students learned computational thinking (CT) skillsand STEM concepts in the problem domain; and (3) evaluating how the collaborativeenvironment supported students working together to derive solutions to problems.We study these three research questions using a variety of process (i.e., logged behavior in theenvironments), product (i.e., models and solutions created), interview, and pre-/post-test datagathered during the studies. Initial results indicate that the intervention helped improve students’understanding and ability to apply the relations among physics concepts like distance, velocity,and acceleration. In terms of computational skills, we find that students improved on theirunderstanding and usage of specific CT constructs, but still had problems with modeling somecomplex scenarios. For both science and CT learning, we observe a wide variation in students’performance and analyze potential relationships with other factors like prior knowledge andbehavior in the learning environments. Based on these results, we present specific lessonslearned and corresponding changes planned for improvement of the learning environments andcurriculum.
Basu, S., & Kinnebrew, J. S., & Shekhar, S., & Caglar, F., & Rafi, T. H., & Biswas, G., & Gokhale, A. (2015, June), Collaborative Problem-solving Using a Cloud-based Infrastructure to Support High School STEM Education Paper presented at 2015 ASEE Annual Conference & Exposition, Seattle, Washington. 10.18260/p.23698
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