Ysgolion Plasmawr a Brynrefail yn ceisio cyrraedd y rownd gynderfynol. Ysgol Plasmawr and Ysgol Brynrefail compete to reach the semi-final of Radio Cymru's quiz.
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Ysgolion Plasmawr a Brynrefail yn ceisio cyrraedd y rownd gynderfynol. Ysgol Plasmawr and Ysgol Brynrefail compete to reach the semi-final of Radio Cymru's quiz.
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
