Skitch App
Skitch allows students to screenshot their work or a web page, annotate with text and drawings, and save everything to Evernote. Let students share and create projects with one another for everything from language arts centers to science class. The app is integrated with Evernote, so be sure to have that installed on the iPad.
Angela albany says
My favorite app for learning sight words is word bingo. The students love it. They also have a math version that the students love playing.