Geyer has timers that are a great addition in the classroom. Our sand timers are easy to use and store. They come in one minute and three minute times. We also have a hall pass timer that allows the teacher and the student to know how long they have been gone and how much more time they have left. Perfect way to keep track of students and stop students from wandering. The Time Tracker Visual Timer & Clock is a great way to keep students on task and focused during quizzes or classwork. The timer has a 180º viewing, large LCD display and 3 colored lights (red, yellow & green).