Datrys problemau
By: Sharon Shapiro ; addasiad Cymraeg gan Gwyneth Jones. Llyfr 1, Ar gyfer blynyddoedd 4-5.
Series: Math@ebol
Publisher: @ebol
Published: 2004
Place of publication: Aberystwyth
Language: wel
Number of pages: 88
Work titles: Badger maths problem solving.