People equate it with the next step beyond TV's or Video or Film Strips. But computers are more than that. Those devices are all one-way. Computers communicate and that's a big difference. Let me use an example.
TV is a great communication device.
There are thousands of educational broadcasts of one sort or another each week. Yet, it has not been found to be a substitute for the classroom. The TV is a one-way device. When used in a classroom the children simply sit and watch at the pace the program was created. They learn only what the authors wanted to teach them.