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See detailMoving towards the assessment of collaborative problem solving skills with a tangible user interface
Ras, Eric; Krkovic, Katarina UL; Greiff, Samuel UL et al

in Turkish Online Journal of Educational Technology (2014), 13(4), 95-104

The research on the assessment of collaborative problem solving (ColPS), as one crucial 21st Century Skill, is still in its beginnings. Using Tangible User Interfaces (TUI) for this purpose has only been ... [more ▼]

The research on the assessment of collaborative problem solving (ColPS), as one crucial 21st Century Skill, is still in its beginnings. Using Tangible User Interfaces (TUI) for this purpose has only been marginally investigated in technology-based assessment. Our first empirical studies focused on light-weight performance measurements, usability, user experience, and gesture analysis to increase our understanding of how people interact with TUI in an assessment context. In this paper we propose a research agenda for assessing ColPS of individuals using the Microworlds methodology implemented on TUIs. In a first example item, we use so-called Micro- DYN items, which are independent microworld scenarios that rely on structural linear equations as underlying model. As the MicroDYN approach has been thoroughly empirically investigated for the assessment of complex problem solving of individuals, it offers a good basis for a reliable and valid assessment. We describe how this approach was applied to create an assessment item for a collaborative setting. This item described in this paper implements a simplified model of a MicroDYN item related to climate change using knowledge of previous studies. Therefore, the focus of the item’s construction lies on meeting the requirements for a standardised high quality assessment. Finally, a research agenda is proposed to sketch the main research issues. [less ▲]

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See detailSuitability of visual modelling languages for modelling tangible user interface applications
Tobias, Eric; Ras, Eric; Amalio, Nuno UL

in Visual Languages and Human-Centric Computing (VL/HCC) (2012)

This paper compares the suitability of visual modelling languages for describing tangible user interface (TUI) applications. After gathering different approaches, we have selected three languages for our ... [more ▼]

This paper compares the suitability of visual modelling languages for describing tangible user interface (TUI) applications. After gathering different approaches, we have selected three languages for our comparative study: the visual object constraint language (VOCL), augmented constraint diagrams (ACD), and the visual contract language (VCL). A weighted evaluation based on multiple quality criteria led to the conclusion that VCL is best suited to model TUI applications [less ▲]

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