The most common methods were talking to them about internet safety and security (79%), keeping sight of what they are doing online (73%) and blocking certain sites (70%).
Y dulliau mwyaf cyffredin oedd siarad â nhw am ddiogelwch ar y rhyngrwyd (79%), cadw golwg ar yr hyn y maent yn ei wneud ar-lein (73%) a blocio rhai gwefannau (70%).