14867108 1.0 video TwentyThree https://reinvent.23video.com 3600 TwentyThree https://www.twentythree.net 480 270 https://reinvent.23video.com/luis-von-ahn-how-we-use-technology-to-teach-better 480 270 https://video.twentythree.com/13968030/14867108/5f8c5b2f47bcf442df441f5f959cb653/480x270cr/thumbnail-6.jpg <div style="width:100%; height:0; position: relative; padding-bottom:56.25%"><iframe title="Video Player" src="https://video.twentythree.com/v.ihtml/player.html?source=embed&photo%5fid=14867108&autoPlay=0" style="width:100%; height:100%; position: absolute; top: 0; left: 0;" width="100%" height="100%" frameborder="0" border="0" scrolling="no" allowfullscreen allow="autoplay; fullscreen"></iframe></div> 607.341