ISBN: 9781908574374 Publication Date: March 2012 Publisher: Atebol, Aberystwyth Format: Game, 284x363 mm Language: Bilingual (Welsh and English)
Learn subtraction. There is one arithmetic problem on each piece. Solve the problem and place the piece by its correct answer. The piece will not fit if the answer is wrong. 81 piece jigsaw.
Pos addysgol sy'n meithrin sgiliau rhifedd. Cyfle ymarferol i ddysgu tynnu. Mae problem fathemategol ar bob darn gyda chyfle i ddatrys y broblem ... a gosod y darn yn y lle cywir. Ni fydd y darn yn ffitio os na fydd yr ateb yn gywir. 81 darn jigso.