The Did You Know? / Shift Happens presentations share with teachers the importance of 21st century instruction and what skills our current students will need in the future.  Created by Karl Fisch and Scott McLeod, the presentations have been revised over the years to include updated facts and figures.  I highly recommend this terrific resource!  Their website has links to all the adaptations of the presentation, as well as a collection of background and supplementary materials that you can use with the presentation.

This is the most current version:

Based on the Shift Happens series, Erik Qualman developed a video that focuses on the social media changes in 2011. Definitely worth a watch!