source: The importance of Welsh-medium education was outlined when the Welsh Assembly Government’s Welsh-medium Education Strategy was published in April 2010. 
target: Cafodd pwysigrwydd addysg cyfrwng Cymraeg ei bwysleisio adeg cyhoeddi Strategaeth Addysg Cyfrwng Cymraeg Llywodraeth Cynulliad Cymru ym mis Ebrill 2010. 