ClassFlow is a new site that I just found out about from Larry Ferlazzo's excellent blog that reminds me a lot of Go Class. Basically, ClassFlow is a cloud based learning platform that teachers can use to create digital lessons that can then be viewed on any browser based device (i.e. laptop/tablet). These lessons can contain all sorts of media such as: images, videos, and more, and allows educators to assess student's learning in real-time.
I highly recommend checking out ClassFlow by clicking here!!
Here is a brief demo video...