App for smartphones and tablets (iOS and Windows)
The Android version is currently unavailable - we are aware of this and are working to get it back online as soon as possible. PLEASE DO NOT DOWNLOAD THE ANDROID APP FROM ANY SOURCE OTHER THAN THE OFFICIAL GOOGLE PLAY STORE AS THIS COULD SERIOUSLY COMPROMISE THE SECURITY OF YOUR DEVICE.
Do you want to create your own learning materials based on this app? To help you do this, we’ve packaged all of the text into a Microsoft Word/Open document file and licenced it under Creative Commons, making it easier for you to reuse and adapt the material.
We'd like to hear from you about how you used this resource.