People learn best today by seeing it in process. That is why in 1982, we brought computers into the classroom and wrote primitive software around bible study. Children played together in groups on a machine for hours trying to save the queen in a spiritual version of dungeons and dragons. Having fun is also essential today for learning to take place, especially people under 35 years of age. The younger a person is the more they tend to learn through visuals and sound.
Effective sermons are now more like experiences, with the whole service becoming the message.