Acom, Annete. The influence of insructional materals on number concept development in children in lower primary classes in Nakawa Diviision, Kampala Dist rict/ Annete Acom. - Kampala , 2003. - xi, 35 p. : tabs ; 30 cm. Dissertation (B.Ed.) - Makerere University, 2003. Includes bibliographical references (p.31-32) Subjects--Topical Terms: Number theory. Dewey Class. No.: 512.7