textbook figure=Images can be used as a Content Activity to help illustrate or demonstrate concepts that are difficult to grasp through text alone. Avoid using images for purely aesthetic reasons; rather, use images that are directly related to learning outcomes. You can find existing images using sites such as MorgueFile.com, Flickr, and Wikimedia Commons. The following link includes a comprehensive listing of additional websites where you can find free and royalty-free images: Where to Find Free Images and Visuals. You can also create your own diagrams, charts, tables, and flow charts using tools such as Creately and Gliffy.