Use PowToon to create dynamic and eye-catching videos that can played or embedded in a larger presentation.  Note the "toon" part of the name and be sure the final product sets the tone you want from your presentation. Don't let the learning curve dissuade you from trying it out!

Download the Adobe Voice App and create the entire presentation on your iPad. You will be required to sign up for a free account using one of the usual - email, Facebook, or Adobe ID. You can create a video using photographs, images, music, animation, and text quite easily.  

Here is a quick introduction on YouTube.