What is a flipped classroom?

The Khan Academy has played an important role in popularising the concept of the "flipped classroom". The simple idea is that students' time in the classroom is better spent actively engaged in learning material rather than being the passive recipients of a 1-way lecture. And while this teaching methodology gains traction worldwide, it is important to understand the broader implications of this change in teaching style. I came across an infographic today that clearly explains the flipped classroom and it's broader benefits. I'd be interested to hear your view on this approach to teaching:

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