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In 1900 the pencil was made. It was found in all classrooms across America.
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In 1925, the film projector was created. Visual learning was established much like Edison predicted on how books won't be around for educational purposes.
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NYC's board of education was the first organization to give lessons over the radio. Since then it was expanded all over the globe.
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The first usage of overhead projectors were by the military. It caught on fire once schools were able to use this innovative technology for its time.
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Although the pen was already invented it gained steam in 1940. The pen was sold for an expensive price of 9.75 each back then.
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Schools used headphones in order to get children to learn through repetition. Schools set up listening stations or labs where children can use headphones for lessons.
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Videotapes and school go hand in hand. Bing Crosby's production company gave the world its first demonstration of a videotape. This phenom led to substitutes playing video tapes for decades.
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The handheld calculator was born. Teachers were hesitant for students to use them because it undermined their teaching.
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The Plato computer set the standard when it came to computers in the classroom. It was very limited per school. It wasn't until later in the 80s when computers became more prevalent.
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The graphing calculator made it easier to do more advanced math. It had plot points and several other abilities within it to do algebra and geometry. There were also games on it.
