Pos y Dydd - Casgliad o Bosau Mathemategol
A Welsh adaptation of a pocket-size volume comprising 180 mathematical puzzles to nurture mental mathematical skills; for children and young adults. Reprint; first published in Welsh in 2004.
Publication Date October 2010
Publisher: Atebol, Aberystwyth
Suitable for age 9-11+ or Key Stage 2/3
Format: Paperback, 160x160 mm, 96 pages