TextFlasher is a simple software to convert text into flashcards in Keynote.
You can type directly into the application text window, paste something from the clipboard, or just drag and drop a text file (.txt) into the window.
Keynote will generate the necessary slides, while converting the text into audio as well.
This software was created while I was embedded at Yishun Primary School. Subsequently, a more advanced version called iPhoto2Flashcard (also available on this site) was created.
SO! Use TextFlasher if you are starting from a text file of words. Use iPhoto2Flashcard if you are starting with pictures in iPhoto.