Stephen Hall, and educator and aerospace enthusiast, participated in NASA's Aerospace Professional Development program and then created Aeroplans, a free Android app. The app includes aerospace simulations and instructions for different activities, along with links and information about aerospace topics.
I've been using it for a day or so and it's a fun app and educational.
Get Aeroplans from the Android Market.
Related:
NASA Simulation based Aerospace Resources for Educators
More great educational resources from NASA
STEM Resources for Educators and Students
