Reset has already talked about the role of Twitter in teaching and how technology has changed not only how teachers teach, but also how students learn. So we were happy to hear about a new Learning in the 21st Century 2011 Trends report, which discussed the increased role online classes play in student education.
Online learning provides both teachers and students opportunities to review and practice concepts. Perhaps no better example is the free learning seminars offered by the Khan Academy. Students still need teachers to facilitate and guide their learning; but online classes can provide useful supplemental education and studying tools.