A resource that was used in the creation of this resource. This term can be repeated for multiple sources. For example, http://example.com/great-multiplication-intro.html.

The predominant mode of learning supported by the learning resource. Acceptable values are 'active', 'expositive', or 'mixed'.

Headline of the article.

Indicates an item or CreativeWork that is part of this item, or CreativeWork (in some sense).

Genre of the creative work, broadcast channel or group.

A creative work that this work is an example/instance/realization/derivation of.

A media object that encodes this CreativeWork. This property is a synonym for associatedMedia.

The purpose of a work in the context of education; for example, 'assignment', 'group work'.

An alignment to an established educational framework. This property should not be used where the nature of the alignment can be described using a simple property, for example to express that a resource [teaches](https://schema.org/teaches) or [assesses](https://schema.org/assesses) a competency.

Specifies the Person who edited the CreativeWork.

A link to the page containing the comments of the CreativeWork.

The date on which the CreativeWork was most recently modified or when the item's entry was modified within a DataFeed.

The creator/author of this CreativeWork. This is the same as the Author property for CreativeWork.

The year during which the claimed copyright for the CreativeWork was first asserted.

The party holding the legal copyright to the CreativeWork.

A secondary contributor to the CreativeWork or Event.

Official rating of a piece of content—for example, 'MPAA PG-13'.

The location depicted or described in the content. For example, the location in a photograph or painting.

The number of comments this CreativeWork (e.g. Article, Question or Answer) has received. This is most applicable to works published in Web sites with commenting system; additional comments may exist elsewhere.

Comments, typically from users.

A citation or reference to another creative work, such as another publication, web page, scholarly article, etc.

Fictional person connected with a creative work.

An award won by or for this item.

The author of this content or rating. Please note that author is special in that HTML 5 provides a special mechanism for indicating authorship via the rel tag. That is equivalent to this and may be used interchangeably.