Dictionary.com
This is one of the most popular apps among the students which can be used on your iPad 3. If you want to improve your vocabulary or improve the quality of your writings then this is an unparallel app for you. 
If you want to find the definition of a particularly difficult word or find a suitable synonym then this is the app which can serve you the best.
iBooks
Apple has recently introduced iBookstore. If you use this app on your iPad 3 you will get easy access to over 700,000 books and counting. But the most interesting thing is that many of these books are free! Another interesting feature of this app is that you can easily browse by title, author, or genre on your iPad 3. When you find a book you like, tap to see more details, peruse reviews, even read a free sample.
Pages
Pages is the best app for writing and editing any tapes of MS office documents including MS word and MS excel on your iPad 3. You can write any thing you want on your iPad using Pages. You can easily write articles, research papers, and even novels.
Articles
Want to get access to Wikipedia? Want to know the historic events around your current location? Want to about interesting places? Then simply shake your iPad 3 and let Articles find an entry for you.
Numbers
If you want to create graphs, organize any kind of data or even want to make salary sheet on your iPad 3 then Numbers is the best app for you. You can easily create spreadsheets using this amazing app.
