Research shows that visuals (animation) plus concise, simultaneous narration is better than just narration alone. When it comes to the issue of projected text on a screen and narration:
“Words should be presented as speech (i.e., narration) rather than text (i.e., on-screen text) or as speech and text.”
— Richard Mayer
Need help with the basics?
pptPlex
Allows you to zoom in and out of slides and move randomly between slides.
PowerMockup
A wireframing and storyboarding tool.
YawnBuster
Allows audience responses and participation with mobile devices.
SlideShark
An app for viewing and sharing PowerPoint presentations. SlideShark keeps presentation notes and formatting.
Create a Prezi account here.
Getting started with Prezi and other tutorials