We developed the "edutab box" as a Computer Supported Collaborative Learning (hereinafter, "CSCL") system that consists of a single unit, including a wireless LAN AP, and is portable. Because the edutab box is equipped with a web application that can be used on a browser, there is no need to newly install an application onto the tablet terminal. Therefore, such a CSCL that uses tablet terminals in regular classrooms can be achieved with this system alone. This study focused on the CSCL function that the edutab box contains. The edutab box was utilized by actual lower elementary school grades with the objective of appraising its effectiveness in an educational context. The experience (1) confirmed the usability of edutab among lower elementary school grades and (2) clarified its contribution toward the autonomous and collaborative learning of lower grade school students through edutab's learning status visualization function.
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