Roedd bum grŵp ar draws Cymru yn cystadlu i ailgylchu’r nifer mwyaf o eitemau pecynnu plastig, papur, cerdyn, metel a gwydr o’u cartrefi. Gwnaeth y pobl ifanc hefyd ddysgu am effeithiau amgylcheddol ailgylchu, er enghraifft os byddai pawb a wnaeth cymrid rhan yn y sialens ailgylchu un botel llaeth plastig yn fwy byddai hynni’n arbed digon o ynni ar gyfer pweru ysgol gynradd am fis a hanner – dros hanner tymor ysgol.
There were five Welsh groups competing to recycle the most plastic, paper, card, metal and glass packaging items from around their homes. The young people  also learnt about the environmental impacts of recycling, for example if everyone who took part in the challenge recycled one more plastic milk bottle, it would save enough energy to power a primary school for 1½ months – over half a school term.