7. Usability Study of Didactical Resources to Children with Down Syndrome

The techniques to know the visual attentions in screens by the user are used with great efficiency in the field of design to make more efficient its objective. In the educational field are few efforts made, being one of the challenges of engineering and Sciences of education to improve learning outcomes. This study aims is to know the usability of personalized, conventional and gestural interaction resources based in the patterns of visual attention of children with Down syndrome, in teaching resources based on eye-tracker validated visual attention in a classroom environment for children with Down Syndrome. Selected 6 students of the Down Tenerife Association (CG = 3, GE = 3), of which GE has previously interacted with the HCI Tango:H platform with teaching resources customized to their requirements cognitive and applied in a playful environment of teaching and learning, and the remaining with common resources in the classroom, designed by the teachers of the institution. Learning objects were presented to students by way of films on a screen, by tracking their visual attention with the help of an eye tracker and following the protocol think-aloud, focused on the attributes of ISO 9141-11: usability for Visual-Based gesture recognition: efficacy, effectiveness, learnability and satisfaction. The results were evaluated with the help of Tobbi Studio platform and subjective attributes through systematic observation, being the resources designed for the Tango:H plaque better valued than those of everyday use in the conventional classroom.