1
Geen AG. Addysgu effeithiol ar gyfer yr 21ain ganrif: blaenoriaethau mewn addysg uwchradd. 4ydd argraffiad. Caerdydd: : Gwasg UWIC 2009.
2
Brooks V, Abbott I, Bills L. Preparing to teach in secondary schools: a student teacher’s guide to professional issues in secondary education. 2nd ed. Maidenhead: : Open University Press 2007.
3
Goulding M. Learning to teach mathematics. London: : D. Fulton 1997.
4
Black PJ, ebrary, Inc. Assessment for learning: putting it into practice. Maidenhead: : Open University Press 2003. http://site.ebrary.com/lib/aber/Doc?id=10161348