eAssessment with Moodle from the UK Open University

In "eAssessment with Moodle" the UK Open University has produced a short set of examples of how quiz questions can be set and in many cases automatically answered, using the Moodle Learning Management System. There are options beyond the usual multiple choice questions, in particular I like the use of numeric answers. With this you can ask the students to calculate a value, but with each student getting different figures to work from. The figures they get are randomly generated from a range you specify. As an example, I could ask students to calculate the Carbon Dioxide Equivalent emissions from a given amount of electricity used and emissions factor (with a few extra erroneous parameters thrown in to confuse the unprepared).