Research shows that using visuals does improve learning over using just words alone. That’s because we process words and images in two different parts of the brain, each with its own cognitive load limits.
By presenting learners with relevant imagery that supports or expands on textual information, course developers can help their students generate deeper meaning and move new information from working (short-term) memory to long-term memory faster.
Free Image Sources
Here are a few recommended websites for finding great (and FREE) images: