Description is an inexpensive (.99) iPad app that allows you to explain a website, record (screecast) computer screen and voice and annotate. It looks really helpful.
We're all always looking for lists and resources that support great literacy instruction--this is a list of short text recommendations that you can use and it comes with a downloadable annotated bibliography.
This App allows users to annotate PDF files. One can insert comments, questions, signatures, etc. Teachers are using it for running records when the leveled texts are put in PDF form.