I will share with you two strategies to consider for both mitigating drift/bloat, as well as helping students actually learn. (By learn, I mean remembering the information AFTER your class is over, not just acing the final and forgetting it all.)
Quarantinotes Series #4 – Images vs Words
From drawing to viewing to remembering to learning, images help lecturers and teachers create the right kinds of neurotransmitters, help us leverage more nodes of the brain, and can been seen to help us remember far, far, FAR more than words can.