Question:

How long does it take to complete a course in E2020?

Solution:

Each student works at their own pace so that is difficult.
Here are some guidelines...

Lectures average between 10-25 minutes.
Journal activities are around 10 minutes to complete (when they do them)
Vocabulary averages around 5-10 minutes to complete.
Homeworks are around 10 minutes.
Quizzes trend around 5-25 minutes each.
Gizmo's run around 10 minutes to complete.
Online Content can be 5-20 minutes...

It all varies by student speed and the specifics of how the class is built. Customization will change things as well.