by Luis Pereira
Link: Animoto for Classroom
This is a cloud-based video creation service that produces video from photos, video clips, and music into video slideshows. (Wikipedia)
Animoto allows you to create professional-looking videos very easily. You need the storytelling and pictures and/or short clips, but it provides several musics and amazing effects. You can publish and download the low resolution version of the video (for the HD one it is necessary to pay for it).
This is an great way to communicate an idea or ask students to use this tool for their presentations.