As the field of online education expands, the range of electronically-supported learning and instructional models has also diversified. While researchers and instructors have yet to agree on a common vocabulary for describing technology in education, several broad categories have emerged. Terminologies such as “web-facilitated” and “blending learning” reflect approximate ratios of online content delivery to face-to-face instruction. Unlike face-to-face courses (or “on-ground,” “on-campus” or traditional instruction), where learning experiences take place entirely in the classroom and through face-to-face communication, online education incorporates web-based instructional technologies.