Reasons to Use (or to Avoid Using) an Image
Images can be effective for explaining concepts that cannot be described adequately in words alone (Ainsworth & Loizou, 2003). The terms “image,” “picture,” and “graphic” in this post refer to static visual representations that include, but are not limited to, drawings, photographs, microscope images, and screenshots. Choosing images to include in the course material is not trivial because having more pictures does not always mean better learning.