The schools elected eco warriors labelled all the switches with green, orange and red stickers.
Pupils have since begun to use the traffic light system to manage our electricity
Disgrifiad o'r gweithgaredd
Bydd disgyblion yn nodi’r holl offer TG, teclynnau a goleuadau drwy’r ysgol ac yn nodi pa rai y gellir eu diffodd gan ddefnyddio system codio goleuadau traffig.
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