How overhead projectors took over your classroom
Summary
Overhead projectors originally served primarily military purposes before becoming a staple in educational settings. Prior to their introduction, educators routinely turned away from students to write on blackboards, making rule-breaking easier. The arrival of this technology shifted classroom management and impacted student discipline across schools.
It used to be so easy to get away with things in school. The teacher, after all, was always turned around writing at the chalkboard! But then came a bit of technology, previously mostly used for military purposes, called the overhead projector. It would change far more than just the disciplinary record of students everywhere. In this episode of Version…
Source: Read the full story at The Verge