Thermostats set to 16 degrees, however at the moment the heating has still not been switched on
Disgrifiad o'r gweithgaredd
Bydd y gweithgaredd annibynnol hwn yn annog disgyblion i edrych am y thermostatau yn eu hysgol ac ymchwilio i weld a ydynt wedi’u gosod ar y tymheredd optimwm.
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