[bridgid]

I do something similar to this but in two circles.
The inside circles faces outwards and the other circle faces them. I then get one circle to move when I want them to change partners.
Sometimes I get one person just to talk for a minute (or until I clap my hands) on a topic which I shout out. Then the next person talks on another topic.
( I keep a pile of possible topic cards in my pencil case to use at anytime in the classroom for fillers)
Then I might get them both to talk and ask each other questions on a topic.
I just mix it up depending on their and my mood for that day.
Enjoy!