You may also want to go over the grading rubric with them. Have students go to the web activity and begin doing their research. Students will probably need about two 40 minute sessions to complete this adequately. Once the activity is finished, meet for internet workshop to discuss findings. Have students self-evaluate themselves using the rubric and adding comments.
Teacher completes rubric and goes over with student.
Now that the students have some background knowledge of this subject, you can deal with each issue on a more individual basis and study in more depth. Visit the many internet sites available to you for any follow-up or art activities.