This is a sample of the Flash4Educators Word Problems Worksheet, re-deployed for use in a Drupal4Ed book. While there is currently no easy interface for authoring questions, the xml format is documented, and help is available!
To create content like this within this site, a person with Teacher access would simply select the appropriate radio button in the Page Media category, and then provide the path the the xml file containing their questions. Better documentation is on the way!