A collection of the best free educational apps a post primary level suitable for iPad :
Equate This! - Challenging single and multiplayer games focusing on addition & subtraction
Art - Excellent pocket art gallery. Includes quizzes, slideshows and search function.
Maths Ref - Formulas, equations, notes and tips with multiple examples and images.
GoogleBooks - Nearly 3 million free ebooks.
Say Text - OCR scanner that allows you to scan text and then coverts it to audio.
Google Maps - Learn about specific locations. High quality maps and multiple views.
Evernote - Organise all of your notes, web clips, files and images.
Skitch - Take notes, edit and capture images, screen shots and other.
Khan Academy – Biology 1 - A selection of teaching videos from this academy.
Bacterial ID - Virtual lab Identify the different types of bacteria based on DNA sequences.
Science House - A library of science lessons and videos featuring experiments.