Dear Katherine
Both models have been covered in the study material for module three (under the section module 3 resources) particularly 1.2 Types of Instructional Design Models and Frameworks.
Activity 1.2 it a general activity, it is not exclusively tied to ADDIE model. What you are supposed to do is download the activity and try to workout or balance the various activities in your course.i.e determe how many of each of the following activities will you have in your course:
Assimilative activities
Finding and handling information
Communication
Productive
Experiential
Interactive/ Adaptive
I hope this is clear. Let me know if you have any other questions.