10 Short and Simple Animations

I am creating a short video to expain a project I plan to work on. Part of the video will contain footage of me talking about the project, During the explanation, I would like to splice in several short animations illustrating what I am talking about. The animations can be very simple, just moving a couple of 2D objects around. I will likely use iMovie to create the video, and would also like to imbed each animation separately on my web site, so the final format of the animation should be supported in both places (or be made in two formats, AVI and animated GIF?). Attached is the script for the movie I am making. A description of each of the animations is given between the brackets [], as well as the voiceover that I will speak with the animation is playing. Even though 10 animations needed, they use essentailly the same art assets, read the script for more details.