Richard E. Mayer has developed a set of instructional design principles that are based on experimental research studies and grounded in a theory of how people learn from words and pictures.
Learn more about Mayer’s cognitive theory of multimedia learning from his books including:
E-learning & the Science of Instruction:
https://amzn.to/44wJvjc
Multimedia Learning:
https://amzn.to/3smX9Ie