One of my new favorite tools! Meograph offers four dimensional storytelling and we like using it with primary sources! Click on the picture to see a Meograph of Molly Brown and a tutorial on how to make one. It is very user friendly and allows you to cite your sources by adding a link or information to each section. I love using the Earth view in Google Earth and seeing the presentation fly around the globe. My few criticisms include the inablility to go full screen and a separate place to cite sources. I emailed them about it and they got right back to me. They told me they are working on both of those things.
Here are some links to other educational Meograph resources:
Meograph educational examples