Educational technology is the study and ethical practice of using technology to facilitate learning and improve performance. The document traces some key developments in educational technology, including the qwerty keyboard in 1862, use of audio equipment for language teaching during WWII, growth of instructional television in the 1960s, introduction of smartboards in 1988, and now uses of websites, blogs and smartboards. Computer-based instruction can provide instant feedback to students and course materials posted online allow students access anytime.