What I really found useful from this video was the fact that the teacher did not use any worksheets or handouts and used all the students in class to elicit possible pros and cons for the debate. Here are the stages for preparing learners to debate and follow a similar lesson structure.
Elicit possible statements for agreeing and disagreeing
Board up these statements on one side of the whiteboard
Choose a topic and divide the class in half
One half of the class think of positives of the topic and the other half think of negatives
Pair a student who focuses on positives with a student who focuses on negatives
Get the learners to use the functional language on the whiteboard
Monitor for feedback at the end of the lesson and prompt learners to use the functional language
Stop the debate and then get students to decide who in their group won the debate and why
Repeat the debate again but with a different topic and pair different students together
Provide feedback and end the class
This is a great activity for Pre-Intermediate learners and above. Try it out next time and see whether you got your students speaking. A huge thank you to Lisa for allowing me to record her lesson.