Gwneud defnydd effeithiol o wybodaeth asesu : llawlyfr fideo ysgolion uwchradd : canllawiau i lywodraethwyr, penaethiaid, arweinwyr pwnc ac athrawon /
Qualifications, Curriculum & Assessment Authority for Wales.
Thames Ditton : ACCAC,
2004.
Cover title.
Includes bibliographical references.