Ipad apps for schools

http://itunes.apple.com/us/app/dictionary-com-dictionary/id364740856?mt=8
This app would be useful for pretty much any class. This app is a dictionary and thesaurus.

http://itunes.apple.com/us/app/the-ruler/id367353754?mt=8
This app would be useful for math or even tech Ed classes. This app is a measurement tool, like a ruler. SO, it would come in handy when graphing, doing word problems, and size references.

http://itunes.apple.com/us/app/periodic-table-elements/id364894399?mt=8
This app is a periodic table of elements, which would be helpful in science classes. During class, At anytime you could pull up the table and use it as a reference and take notes right on it, rather than constantly pointing at a poster all the time.