Entropy of Eye Fixations: a Tool for Evaluation of Learning Objects

Learning objects (LOs) are important information resources that support traditional learning methods. To evaluate the impact, effectiveness, and usefulness of learning objects it is necessary a theoretically, reliable, and valid evaluation tool. This paper presents a metric to compare the design of LOs, it uses the information provided by visual fixations measured from a small focus group. We conducted an experiment with children of elementary school (n=23). Results showed that images with higher values of the proposed metric were faster to read (Mean = 0.629 min/image) than those images of LO selected randomly (Mean = 0.782 min/image). The metric is useful to optimize the fluency, this is an important step through obtain a fully automated tool to evaluate LOs.