Mobile Robotic Supported Collaborative Learning (MRSCL)

In this paper we describe MRSCL Geometry, a collaborative educational activity that explores the use of robotic technology and wirelessly connected Pocket PCs as tools for teaching and reinforcing concepts of basic geometry. The application can be considered robotic aided education since the robot acts as a mediator in the learning experience while the students are able to learn concepts that are not related to Robotics. One mayor difference with previous computer based teaching tools is that the robot motions are not absolute, but relative to external references and past moves mapped in the real world. Furthermore, MRSCL Geometry helps students to develop social abilities, such as communicating with their pairs, and geometrical abilities, such as interpreting and describing information about lengths, positions, and trajectories. Autonomous robot navigation is carried out by developing the teaching activities in a simplified world consistent of clear space and bright color landmarks that are used by the robot as the main reference to continuously track its position. In this respect, we develop vision algorithms for the real time detection and tracking of landmarks. We also implement distance estimation and control algorithms to allow the robot to move and turn accurately.

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