Here is another version of "It's Time for Lunch" From the new book in chapter 3. Afterwards, I had students form in groups and I whispered a time to them and then the students had write the numbers on the backs of their partners. The student at the end raised their hand (To prevent the students from killing each other) and I then called them over and had them write the time on the board. To make sure it doesn't get out of the control, I told the students it was a quiet game and that they would get 2 points if they were quiet, 1 point if they were noisy. normally I divided them into 6 groups, but it's flexible.