Group sets are shells that house the different groups within a course.

Threaded discussions are hierarchal, collapsable, and expandable.

You can create a question that has multiple options for students to select in their response. You can create a sentence with multiple answers, as demonstrated in this lesson, or you can use the same steps to create a list.

You can create a matching question for your students.

You can create a quiz question that involves a formula with a single variable. Based on the variable and formula definitions, the question could change for every student.

You can easily import quizzes from programs that create QTI files.