Cyflwyno YstadegaethGraham Upton, Cook, Ian, Lynwen Rees Jones, Ffion Kervegant · First published 2012Open the Tome
Cyflwyno Teithio A ThwristiaethBob Holland, Ray Youell, Delyth Ifan, Ffion Kervegant · First published 2011Open the Tome
Cyfrif a Deall RhifauHilary Koll, Steve Mills, Lynwen Rees Jones, Ffion Kervegant · First published 2010Open the Tome
Gofal AC Addysg PlantPenny Tassoni, Lynwen Rees Jones, Ffion Kervegant · First published 2010Open the Tome
Rhifau A'r System RifHilary Koll, Steve Mills, Ffion Kervegant, Sue Woolat · First published 2009Open the Tome
Allwedd MathemategRoma Harvey et al, Ffion Kervegant, Colin Isaac · First published 2005Open the Tome
Mathemateg TGAURichard Parsons, Ffion Kervegant, University of Wales, Aberystwyth, Centre for Educational Studies Staff · First published 2005Open the Tome
Allwedd MathemategCanolfan Astudiaethau Addysg Staff, Barbara Job, Ffion E. Kervegant, Renie Verity, David Baker · First published 2002Open the Tome
Llawlyfr Adolygu MathemategRichard Parsons, Emyr Evans, Ffion Kervegant · First published 2002Open the Tome
