This work presents research evidence on the impact of a collaboration script to leverage the use of an Algorithm Visualization (AV) system as a tool for experimentation and reflection in the context of online collaboration. The objective of the authors’ effort is to improve the learning conditions when AV systems are used as online learning tools, avoiding situations where unguided collaboration may result in suboptimal peer interaction. Results from two studies are reported, where university students collaborated online following the steps of a reciprocal peer tutoring script and using two different AV systems to visualize their solutions on specific algorithm-related learning tasks. Discourse analysis based on an appropriately extended IBIS model and further statistical analysis indicate that the use of the collaboration script enhances the task-related peer interaction and consequently the intrinsic feedback that peers receive from interacting with the AV system, something expected to lead to improved learning outcomes. The implication for AV system designers is that the inclusion of a collaboration script component in the system design is strongly encouraged as a means to augment the expected benefits from online collaborative learning tasks.

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This work concerns the design of script supported algorithm visualization systems for educational purposes, focusing on the support and the enhancement that those systems provide in the process of teaching of an abstract subject such as algorithms. Research on algorithm visualization (AV) systems indicates that their use can improve the understanding of algorithms when compared with the traditional ways of teaching. However, the design of AV systems does not reflect current research-based guidelines regarding productive pedagogical methods for algorithm learning. We suggest that the effectiveness of AV systems as e-learning tools can be improved by facilitating scripted collaboration of learners when working with visual representation of algorithms. This work in progress presents the architecture of AlCoLab, an AV system that also implements collaboration scripts as a tool to guide students in creative teamwork.