"Visual literacy skills equip a learner to understand and analyze the contextual, cultural, ethical, aesthetic, intellectual, and technical components involved in the production and use of visual materials. A visually literate individual is both a critical consumer of visual media and a competent contributor to a body of shared knowledge and culture (Visual Literacy Standards Task Force, ACRL, 2011)." - International Visual Literacy Association
"07 10 10 am 11 09 04" by Collin Anderson is licensed under CC BY 2.0
Make sure your visualizations contain images that are free to use. The links below offer a number of royalty free images.
Government Organizations (such as NASA, NOAA, CDC/PHIL, Department of Agriculture, etc.)
Museums
University Digital Repositories