A holistic approach, with rich content is more likely to lead to good learning, even if it is simply used to provoke interest from the learners. Regarding the use of multimedia he quotes an article from Reiner and Willingham:
...learning-styles theory is sometimes offered as a reason to include digital media in the classroom. While including multimedia may be a good idea in general (variety in modes of presentation can hold students' attention and interest, for example), it is not necessary to tailor your media to different learning styles. We shouldn't congratulate ourselves for showing a video to engage the visual learners or offering podcasts to the auditory learners. Rather, we should realize that the value of the video or audio will be determined by how it suits the content that we are asking students to learn and the background knowledge, interests, and abilities that they bring to it. Instead of asking whether we engaged the right sense (or learning mode), we should be asking, what did students think about while they were in class?