The document discusses melding IMS education interoperability standards like Caliper analytics, Learning Tools Interoperability (LTI), and Question and Test Interoperability (QTI) with the EPUB3 standard. It proposes using the open source Readium EPUB3 reader codebase to demonstrate integrating these standards. The document outlines recommendations and best practices for using IMS standards within EPUB3 publications and provides an overview of ongoing and future work by IMS to develop the EDUPUB standard.