Even your youngest students can use Learning Resources’ Simple Stopwatch. Featuring only three buttons, children quickly understand the separate functions; there’s green for go, red for stop, and yellow for clear. Use for science investigations, timed math exercises, elapsed time tracking and a variety of classroom management needs. Shows minutes, seconds and one one-hundredth of a second on an easy-to-read display. Requires one 1.5V button cell battery, which is included. Comes in random assorted colors.