The use of technology to facilitate learning has increased dramatically over the past 20 years. Organizations such as the Association of Educational Communication and Technology (AECT) http://www.aect.org are dedicated to improving practice. Another organization ISTI is focused on technology in K-12 education. You might also want to review literature on 21st Century Learning.
This is a place where we can discuss the practice of distance learning and gain more information on tools and techniques that enhance the learners experience.