Description: Like traditional learning materials, much of online learning started out with static text, images and later, audio/video. However, instructional design research tells us that students learn through practice and receiving feedback. The ability to deliver immediate, targeted feedback within the learning materials themselves is one of the key affordances of online learning. How can we design courses that move away from static content to include rich interactions for students? This brief presentation will showcase examples using a simple and easy to use open source tool to create interactive online course materials – such as questions, activities, and simulations that enable practice and immediate feedback.