Datrys problemau
By: Sharon Shapiro ; addasiad Cymraeg gan Owain Siôn Williams. Llyfr 2, Ar gyfer blwyddyn 6.
Series: Math@ebol
Publisher: @ebol
Published: 2005
Place of publication: Aberystwyth
Language: wel
Number of pages: 88
Work titles: Badger maths problem solving.