A dramatization is the acting out of something. You see these a lot in documentaries on TV––there will be a dramatization of the JFK assassination, using actors to show what happened on that fateful day.
Dramatization is a great way to cement learning. If you make a skit in your class showing how photosynthesis works, you are much more likely to remember it. Think Magic School Bus. Dramatization can also mean turning a novel into a movie or a play.