Thinglink

http://www.thinglink.com/
I have looked for an easy way to link portions of an image and this tool is the easiest I have found .  It lets you upload or choose an image from Flickr,Facebook or  the web.  You then can select portions of that image and  add description and links. You can also record and  add video. 






Classroom Idea:
 Health and PE. Students take pictures of athletes and link body positions to appropriate stretches and strengthening exercises.

Art: Students studying an specific artist could choice her most repernattive work and tell her story interactively.

Thanks to http://www.freetech4teachers.com