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Boom!
Boom!
Cyfres wyddoniaeth i bobl ifanc. Fun science show for youngsters.
Cyfres 3: Pennod 13 (14 mins)
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Cyfres 3: Pennod 13
Tro ma mae'r brodyr Bidder yn dangos pam na allwn wastad ymddiried yn ein llygaid a byd...
14 mins
Cyfres 3: Nadolig
Ymunwch â Rhys ac Aled Bidder am arbrofion gwyddonol Nadoligaidd!Hwyl yr wyl mewn ragle...
16 mins
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