Introduction: Virtual worlds (VWs) are immersive three-dimensional environments, accessible simultaneously to multiple users, and described as shared, simulated spaces, whose inhabitants represented as avatars. VWs enable freedom of expression. Using VWs in educational contexts requires a shift from teacher-centered instruction to facilitation of…

The purpose of this mixed-methods study was to explore how seventh graders in a suburban school in the United States and sixth graders in an urban school in Taiwan developed argumentation skills and science knowledge in a project-based learning environment that incorporated a graph-oriented, computer-assisted application (GOCAA). A total of 42…