Defined by the HyperDoc Girls: "HyperDocs, a transformative, interactive Google Doc replacing the worksheet method of delivering instruction, is the ultimate change agent in the blended learning classroom."
Learning with HyperDocs
Our very own Plano ISD educators presented "Learning with HyperDocs" at TCEA 2018. The "Technoritas", Diana Thornbrugh, Dora DeBoer, and Carolynn Sanchez, created this great Google Slides presentation with ideas and resources for creating HyperDocs.
Great collection of HyperDoc examples for (mostly Elementary) ELA can be found here.