I mentioned the strengths of teaching with video in my previous post. More than just as a tool for teachers, though, many are finding the benefits of having students create video tutorials. Here are three free apps worth checking out if you want to explore this on an iPad. I am including just a few thoughts on each.
There's only one "slide", so to do multiple slides you have to set up the screen, record, pause, clear and set up the next screen. If you want to undo something you say, you're out of luck for the most part. There's no way to undo just the audio. It has a good community for sharing the lessons though.
I like how you can set up you slides ahead of time for presentations in this one, but like ShowMe, there's no way to just undo the audio. I lost a 12 slide setup twice because of this and eventually decided it's not meant to be PowerPoint. These can be shared online, but last I checked you shared only with users who signed up in your "school" community. I didn't see a way to share with the world at large.
Screen Chomp -
This is by TechSmith, makers of Camtasia. That's my screen capture software of choice, so I was really looking forward to using this app. It has a fun look that should appeal to younger students. There's also a way to share them online and you can scroll the screen too using two fingers. The scrolling makes up for the fact that it doesn't do multiple slides. The drawbacks are that you can only import one picture and one again, serious audio mistakes are going to require a complete do-over of the whole presentation. As the TechSmith site states, this is going to be good for bite-sized lessons, sort of like Jing for the iPad.