The boys form one circle and the girls form another circle around the boys unless there are more boys then just switch it up. Start the music and have the students start to walk in their circle but in opposite directions. When the music stops, whichever boy and girl are across from each other would dance one dance together. To make it interesting say that you will judge those couples dancing and POSSIBLY give the best couple a prize. This is a great way for the students to mingle with each other and break the ice. You can use slow dances but faster dance songs work BEST!