There are lots of free good tools available to help you teach and to support your classroom practice. Some of the better ones are shown here. I am starting with two of my favourites!
A great little app that allows you to create your own tutorials and 'how to' films very easily.
Screen chomp is a great screen capture tool for creating explanatory clips to explain a concept or for getting children to talk about their work as they are doing it. For more information watch this explanatory video.
Organise your favourites using Pearltrees. If you click on the one above it will take you to lots of ipad info.
Audioboo is a great little app that enables you to record and publish in minutes.
For an example, see here.