TeachtimerTeachTimer Designed for the classroom teacher to use in timing tests, reading assignments, lab experiments or any other classroom event. Placed on any standard overhead projector, the TeachTimer projects in large numerals the amount of minutes/seconds remaining during a timed event. This encourages students to manage their time more efficiently. Timer can count down to or up from zero. Timing counts can be paused or repeated. Audible signal gives pre-warning before end of timing count. Battery-saver mode lets clock run with display turned off.