I should probably add~
I didn't add it to the ppt, but did on the blackboard after I saw the sentences the students made; make sure they pay attention to sentence tense. I used the example 'The tsunami is here' for present tense vs 'The tsunami will come' for future so 'I need water, because I will be thirsty (after the tsunami)' not 'I am thirsty (now)'
And the fun part: if the pairs didn't finish by presentation time, I told them they died in the tsunami and sent them to the back of the classroom until they finished. I ended up with almost a 90% completion rate on the worksheet, which is totally unheard of for my (non-graded) classes.
Time frame I used
15 min for ppt
10-15 min (I said 7 in the ppt, but I gave them extra time) for The Plan
5 min to fill in the dialogue
10-15 for the pairs to present