Formal class discussions.
   
Each group to give their opinion with the subtopics, the groups can either have one student give the group's opinion or each student in the group can break down the opinion. It's up to them how they want to do it and also based on their levels
Open class discussions.
 
Students to give their opinions freely and discuss as a whole class.
 
Group debates.
Debates between two groups at a time to see who is stronger.
 
Students vs teacher.
Students have to argue against you and to see how well the can debate against you.
 
Student interaction.
 
Students take control of the class as if they are teachers. Each group has to present their topic and interact with the class with questions.
Projects in PDF file format
 
These projects include images so they're in PDF format. All you need is Acrobat reader on your computer to download them.