In looking for a video to supplement our study on the writing of the Constitution, I (re)discovered School Tube videos work on the iPad. I say rediscovered because at one point during last year, I may have checked and it didn't work or it did work and I don't remember.
Either way, I am happy to say that School Tube videos worked well on the iPad. The embed code is located in a slightly different spot than YouTube, but accessible.
Here is the video that supplemented our learning.
Consider School Tube as another resource for video supplemental material.