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The radios were invented in the 1920s and created a new way of learning. Teachers could use radios to broadcast the news for the students and even had on-air classes.
https://www.ericdigests.org/1999-3/radios.htm
https://www.youtube.com/watch?v=iqfpGkJX8Nc -
In 1930, the overhead projector was introduced. It made it easier for teachers to present information to the students, such as note-taking which became more efficient.
https://classroom.synonym.com/use-overhead-projectors-education-7200654.html
https://www.youtube.com/watch?v=4VBSQPeAdM4 -
Headphones were invented in the 1950s and allowed students to go to listening stations and listen to recorded lessons. If a student missed a day or wanted to better understand a concept, these came in handy.
https://www.camcor.com/resource-center/headphones-for-the-classroom.html -
In 1951, videotapes were another method of instruction in the classroom. They have advanced over time and have been used different ways in classrooms. One current way they've been used is teachers recording themselves teaching during the pandemic.
https://www.journals.uchicago.edu/doi/abs/10.1086/460406?journalCode=esj
https://www.youtube.com/watch?v=fBFHBKUzlEU -
In 1954, this teaching system provided students with the ability to learn individually and move through the lessons at their own pace. This ultimately allowed students to focus on their own learning.
https://chip.web.ischool.illinois.edu/people/projects/timeline/1954teaching_machine.html
https://www.youtube.com/watch?v=jTH3ob1IRFo -
In 1959, photocopiers were invented allowing for the mass production of materials. This allowed teachers to quickly and efficiently produce materials for their classes.
https://neu.org.uk/advice/photocopiers-schools -
Handheld calculators were created in 1972 and brought into the classroom. These made quick mathematical calculations possible and have progressed over time.
https://www.edutopia.org/article/using-calculators-deepen-students-engagement-math -
In 1985, the computer used today was invented and created a whole new world for us. Over time, computers have changed and improved and continue to do so. These have become important in education and have improved education, in general.
https://www.livescience.com/20718-computer-history.html
https://www.youtube.com/watch?v=QvI92bDpHLw -
Smart boards were introduced in the classroom in 1991 and provided a new way of teaching. These enhance students' learning experience and can make it easier and more enjoyable as a teacher.
https://www.teachhub.com/technology-in-the-classroom/2019/10/technology-in-the-classroom-the-benefits-of-smart-boards/
https://www.youtube.com/watch?v=0U05WeXPGlk -
The iPad was invented in 2012 and has been used in the classroom since. They are easy for children to use and can make learning more enjoyable.
https://resilienteducator.com/classroom-resources/how-to-utilize-ipads-in-the-classroom/
https://www.youtube.com/watch?v=IzSNdxsfk0Q