The 100 Worst Ed-Tech Debacles of the Decade
DECEMBER 30, 2019
The Flipped Classroom". It was probably Sal Khan’s 2011 TED Talk “Let’s Use Video to Reinvent Education” and the flurry of media he received over the course of the following year or so that introduced the idea of the “flipped classroom” to most people. billion by 2023. billion by 2025.
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