How to set up a timer for an online classroom depends on the form of timer chosen: Online Stopwatch, Online Egg Timer, Timer Tab, Timer Pop and Timerrr.com are listed on Free Technology for Teachers. Some timers requires no download, installation or plug-in, states Online-Countdown.
Timer Pop allows you to generate and save numerous timer settings for use as desired. Online Stopwatch offers you the choice of a stopwatch utility or a countdown utility. It allows you to set the countdown timer for any length of time, and an alarm beeps when the time elapses.
Online Egg Timer offers three countdown timers on one screen and allows you to either set only one timer or run the three concurrently with variable settings. It requires no registration. Just visit the site, set countdown timers with the up and down arrows, and click "start timers" says Free Technology for Teachers.
Timer Tab from the Chrome Web Store is used both online and offline. It offers countdown timer, alarm clock and stopwatch functionality. The website edition of Timer Tab is used only online.
Timerrr.com provides two free countdown functions. The standard Timerrr uses a dial. The "egg timer" type displays an egg timer as the countdown mechanism. The two can be used to set a countdown of about sixty minutes, declares Free Technology for Teachers.