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 History, we tell the story of the overhead projector. David Pierce is joined by The Verge's Jake Kastrenakes and Stanford professor Antero Garcia to discuss how overhead projectors were developed, how they made their way into classrooms, and how they changed so much about the way kids learn. …

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For multiple years, the hottest toy in the United States was a book. But not just any book: a smart book that could play sounds and respond to taps and help kids learn to read. It was the kind of gadget seemingly any parent could get behind, but it came with a high price - and some unexpected parenting questions.

On this episode of Version History, David Pierce is joined by The Verge's Andru Marino and Jennifer Pattison Tuohy to explain how the LeapPad worked, why it was so enticing to both kids and adults, and why the company that made it could never quite follow it up.

We're almost finished with our fifth season of Version History, all …

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