I generally do an activity like this on the first or second day of a new IB Topic unit. It's a great way to get kids writing and speaking about relevant topics/issues/ideas for the unit. It can take the whole class period if you change the timing around (it all depends on how long you want them to write and converse), but I have it set now to take about 18-20 min.
Slide 1 : Title slide
Slide 2 : Directions for the writing portion of the activity. I do not require them to write in complete sentences--they can use bullet points if they want.
Slides 3-8 : Prompts/Questions. Students write for 1 min per prompt.
Slide 9 : Directions for the speaking portion of the activity.
Slide 10-15 : Students talk with partners (and use notes from the writing section) for 2 min. per topic. Afterward, we discuss briefly as a class.