The school where I teach uses a 75 minute class period. Some of the classes are pure didactic, with large quantities of pre-written material to cover each day. We currently do not have the ability to use Youtube or other unapproved content within the classroom. We use a regular white board for lecture material, and there is very little freedom, time, or resources available to implement alternatives. Additionally, we often have 30 or more students in each class. What are some suggestions for ways I can appeal to multiple learning styles in a very dry, lecture-heavy environment, especially in a large group?