Assistive Tech Tip: Computer Timers
Here are some free count down timers on the computer to keep children aware of the amount of time left for an activity or lesson.
My favorite is the timer on classtools.net where you can actually see the time expiring instead of just numbers counting down. You can also add music to the timer at the top of the page.
If you want a countdown timer with an alarm that sounds at the end of the time try the online stopwatch.
Lastly, if you need a timer when you are not online, you can download cool timer (I have never tried this one though).