“…Cognitive skills refer to the ability of efficiently finding answers for a specific issue or question, while metacognitive skills refer to the ability of adapting the strategies for finding the answers. A number of studies (Amershi & Morris, 2008;Moraveji, Morris, Morris, Czerwinski, & Riche, 2011;Kuo, Hwang, & Lee, 2012;Mason & Watts, 2012;Morris, 2008;Morris & Horvitz, 2007;Morris, Paepcke, & Winograd, 2006) have further indicated that integrating collaborative learning strategies, in which students are able to share opinions, knowledge, or experiences thorough online discussions might be helpful to them in making reflections on the keywords and web pages adopted in web-based problem-solving activities (Mason & Watts, 2012;Mitnik, Recabarren, Nussbaum, & Soto, 2009). For example, in the study of Mason and Watts (2012), a series of collaborative problem-solving and information-sharing experiments were conducted.…”