infogr.am is an easy-to-use infographic builder. Students can take data that they have collected, put it into an excel sheet, and upload it to their very own infographic. "What is an infographic," you ask? Click here to see an infographic on the definition of an infographic. (I know, it is confusing.)
Students will need to create accounts. Please also keep in mind that students under the age of 13 will need parent permission to participate. So if you want to use it, please send a permission form home so that your class can use it with utmost integrity.
Lastly, I have tried this on an iPad. Since it is still in beta, the functionality is somewhat limited. Try it for yourself on a tablet, but I think you will find some of the limitations frustrating. Hopefully they will work out the bugs in the near future. However, it is a step in the right direction for mobile devices like the iPad for a web-based service.