Programmable 'traffic light' which makes the remaining time visible to the whole class.
Contents: Time Tracker, height 20 cm, diameter approx. 8.5 cm. With display, volume control and pause button. Green, yellow and red lights visible at a 180° angle. Choice of six different audio signals and adjustable up to 24 hours in 1-second increments. Also required: 4 AAA batteries (not included).
