During the 'Audiovisual Era' of educational technology in the US, which spanned approximately which decades? Describe its defining characteristics.
1920s-1950s: Introduction of radio, filmstrips, and phonographs, enhancing multimedia learning.
1900s-1920s: Initial use of magic lanterns and overhead projectors, marking the advent of visual aids in education.
Baroque art features strong contrasts, while Rococo art prefers more subtle transitions
Baroque art is generally larger in scale than Rococo art

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