An OER radiation physics website at the University of Alberta called OpenPhys makes the delivery of the content, which is unlike any OER project, unique. This Open Phys site is meant to be a way for medical professionals to learn more about modern physics, specifically those that underpin the MRI. However, what is really interesting about the site is its structure: the fundamental topics are displayed as tiles. The main page of Open Physics presents the various topics as tiles. Students can, after exploring the “User Guide” can proceed in any order they wish. When the student selects a topic, they are directed to a map with the information. This structure is more flexible than a standard book as there is no requirement for a linear progression. For some topics, such a non-linear presentation is particularly useful. In addition to content presentation, this site makes use of multi-modal presentation, mixing videos and text, as well as H5P to incorporate formative quizzing. This is a great method of presentation and the fact that this source code for this site is on GitHub under Creative Commons Attribution 4. 0 License makes it easy to adapt and incorporate into your own materials.