Today's culture has become so visual that teachers and students get considerable information from visual elements. These visual elements are increasingly appearing in teaching and learning resources, delivered across a range of media in a variety of formats: textbooks, multimedia presentations, computer tutorials, television programs, and Web resources. Visual information usually comes in the form of line drawings, photographs, maps, diagrams, flowcharts, graphs, time lines, geometrical figures, and Venn diagrams. Educators believe that using visual treatments helps learners to explore meanings clearly, directly, and easily, and yields positive results. For example, students can learn the word "spoon," but to look at a spoon communicates so much more. By looking at the spoon, students can read the history of eating, utensils, materials, civilization, culture, and habits (Sadik, 2011).
Sadik, A. (2011). Improving Pre-Service Teachers' Visual Literacy through Online Photo-Sharing Applications. International Journal of Emerging Technologies in Learning, 6(1), 31-36.