Eco Team spoke to teachers about when its cold put a jumper on and shut the windows , The site manager spoke to the children and said if a window is open when the heating is on to tell the teacher.
Disgrifiad o'r gweithgaredd
Bydd gwisgo siwmper yn y gaeaf yn arbed llawer o ynni ac arian gan y bydd angen llai o wres arnoch chi.
Bydd y gweithgaredd hwn yn annog disgyblion i ymchwilio i faint o blant ac oedolion sy'n gwisgo dillad cynnes ar ddiwrnodau oerach.
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