Summary

The paper does 2 studies to analyse the effect of design choices on the kinds of interactions performed and the effect on learning opportunities. One of the studies was with an interactive tabletop. There was a LED illuminated glass surface. Many plastic objects were used as input devices. There is a marker on the underside of the object. It is tracked when the tagged object is placed on the table. Different digital effects are generated on the screen when different objects are recognized. The next study is with Wiimotes. The goal of this study is to explore the use of tangible
"extertion interfaces" to understand the concepts of motion and acceleration through body-based interaction. As the Wiimote moves around, a different effect is generated. Technically, they don't have to point the mote towards the screen.. However, to see the visual feedback, they need to look at it.

The results show how the different interactions with the system influenced the kinds of learning opportunities promoted. The location of the representations was found to have a direct impact on where the children's focus is located and how they are aware of other actions. Observing and directing fellow peers also contribute to learning.

Analysis

I like the idea of tangible interfaces. I think we have read a paper dealing with that earlier in the semester. However, I like to see more applications of tangible interfaces in learning.