What are learning objects?
The broadest definition of learning objects seems to be, "any digital resource that can be reused to support learning."
Accoring to LOAZ, "There are many characteristics of learning objects, the common ones are: accessibility, interoperability, adaptability, reusability, durability, and granularity."
What role do learning objects play in Moodle? If we accept that any reusuable, digital resource can be a learning object, almost any resource or activity we use in Moodle qualifies. After all, you can import and export resources and activities between courses pretty easily.
Creating Learning Objects with Moodle
Take the book module...
Uploading Simple Learning Objects to Moodle
Consider a Power Point presentation...
More Sophisticated Learning Objects
But what about metadata and SCORM and a host of other considerations?