Doorway Activities have been developed in Flash. This is a very suitable medium for creating these learning activities. However since the original development work was done, Flash has become less popular. The first blow was that Flash was not allowed on the iPad.
There is a solution to this in the form of Puffin Browser. You can download it at www.puffinbrowser.com
Accessing Doorway Online using Puffin Browser on your iOS device or Android device (tablet or phone) should allow you to use the activities on this site without difficulty. This works in most homes. However, there may be restrictions on school networks that prevent this working. We are looking for solutions.
The best solution would be a new version of each activity on the site. We’ve made a start. Take a look at Doorway Cashing In.