I know this is an old, inactive thread but I have stumbled across a solution to the original question. I too have been looking for a work around and up until know have used a Remote Desktop solution.
Puffin web browser allows the ipad to use mymaths and many other flash sites. There is a free version available which works fine or a paid version with additional features.
and for android, Blackberry, Linux?
I don't think MyMaths are going to be around much longer unless they start writing things in a bit more of an accessible format (HTML5) for the type of devices that students own.
Sorry for lack of detail. I'm using puffin web browser on IOS. Not sure about android or Linux.
Mathster.com claims to work in any browser without the need for flash.
I can't believe people are still trying to get a workaround to get Flash to work on ANY mobile device....this technology is dead and any developer not working to get their product moved on from Flash Mobile will die a slow death.......