National Clearinghouse for Bilingual Education, Washington, DC.
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Not too long ago, when we said educational technology we were referring to radio, television, film strips, overhead projectors, tape recorders, and videocassette recorders (VCRs). Educational technology has advanced rapidly during the past few decades. Today, when we say educational technology we are referring largely to a vast array of computer-based technologies, such as compact disc-read only memory (CD-ROM), interactive audio, interactive videodisc, local area networks (LANs), hypermedia, and telecommunications. Research efforts are now under way to investigate the effectiveness and efficiency of a broader range of computer-based instruction-that of multimedia and telecommunications. "Multimedia instruction" can be loosely defined as technology integrating some, but not necessarily all, of the following in an interactive environment: text, graphics, animation, sound, and video.