I have found timers to be so helpful in my classes. It's easy to tell students, "Five more minutes" and lose track of time. There are some great online timers available that students seem to love. I project them onto my screen, so all students can keep track of how much time they have left. My favorite is the Duck Race Timer ! What is unique about this timer is that you can select the number of ducks for the race. In my class, all students know their roster number for both my cell phone caddy and their assigned computer. So, when I use the duck timer, the student with the winning number gets a prize! Beware! The students become glued to the screen the last thirty seconds. They began to count down in unison. There's lots of laughing and cheering (who doesn't love laughing and cheering?). You would think the winner won an Olympic event! I especially enjoy using the timer in my Read 180 class for our twenty minute rotations....