The dynamic and active environment that is created within the flipped classroom, means that it is essential for students to come prepared for class. Once you have a clear idea for how students will be asked to apply their knowledge and skills during class, then begin considering what students will need to read or view in advance of class. While online video content is associated with the Flipped classroom model, one can flip a class by repurposing traditional materials. Some common ways students prepare for class incude:

Reading materials (e.g., textbook chapters or relevant articles)
Online video and audio content (e.g., podcasts, videos, online micro-lectures, simulations, or demonstrations)

Keep it simple at first by either relying on your current resources or using existing online content rather than creating your own. If you have time, then explore what content currently exists online that may help you supplement your resources. Whatever path you take, make sure that you...

Hold students accountable for completing the pre-class assignment
Provide students a way to pose questions about the content they are learning outside of class