Details the sources, advantages, teaching applications, and limitations of a wide variety of instructional resourcesfilmstrip projectors In their general operating characteristics, filmstrip projectors are similar to manual slide projectors. The principal differences ... Focus the beam on the screen to obtain sharp edges of the lighted area. Focus may be adjustedanbsp;...
|Author||:||James Wilson Brown, Richard Byrd Lewis, Fred F. Harcleroad|
|Publisher||:||McGraw-Hill Companies - 1977|