Learning outcomes and eye-tracking
To evaluate the possible impact of eye-tracking in the study and analysis o the learning process of students, this section makes a comparison in which elements of Bloom`s Taxonomy can be analyzed by implementing the proposed system. Bloom's Taxonomy is a framework that tries to describe how the process of learning occurs in the cognitive domain, it consists of six stages or levels. An illustration of Bloom's Taxonomy can be appreciated in Figure \ref{661434}. The Taxonomy follows a hierarchical construction that depicts the levels of apprehension on learning from the most basic one at the beginning of the illustration to the most complex one at the end as shown in Figure \ref{661434}. This taxonomy has been used in the past as a model to create assessments, curricular maps, online course syllabus, or defining teaching strategies \cite{Krathwohl_2002}. Each of the stages or levels of Bloom's Taxonomy are associated with certain types of actions or activities. In the case of the first stage called Remember, refers to the action of recall or recognize ideas and information. For the second stage, known as understanding, it is associated with actions such as hearing, viewing, and reading with the intention of interpreting or summarising ideas in their own words. The third level is related to the application of theories, ideas, or problem-solving techniques and used them in new problems. The fourth stage consists of the decomposition of concepts in its basic units or parts through examination. Finally, the evaluation and creation stages are the higher learning outcomes that could be achieved according to the Taxonomy of Bloom. In the case of evaluation, it is related to judge opinions or points of view while creation is the action of assembly different parts of knowledge into a new whole to solve a problem \cite{Adams_2015}.