You are going to be divided into 7 groups. Topic is the same for everybody = PLASTIC but your task to study is different.
Each group is going to discover it from different point of view.
According to your point of view you will also have a different group names and also different final output.
You can see several subpages:
Click on your subpage (you have been divided into groups on your lesson, so you should already know your group name).
There you can see instructions appropriate for you.
Have fun with your job! :-)