Timerrr = Online Countdown Timer
Even your Grandma will know how to use it... This online countdown timer is meant to be as easy to use as a regular kitchen timer. It is equally simple: all that you have to do to set it is to rotate the dial and point the red arrow at the desired number. It can take just one click - just grab the green dot that will appear to help you out and move it around. You will notice that the counter is updated every time you move the dial to make things even more clear. Let the countdown begin.
Related: Classroom management