A quick pointer to Perfect Captions - a nice little early writing app for KS1 and children with SEN. It does what it says on the tin - allows you to add captions and labels to photographs that you have taken. There are many others available, but this is one that I have used in class and the children have enjoyed using it. You can create albums and also share work through social networking.
You can find more great educational iPad apps on my iPads in primary site.