A. Yusha'u, M., Department of Science and Vocational Education, Faculty of Education & Extension Services, Usmanu Danfodiyo University, Sokoto-Nigeria, Nigeria

• Scientific Journal of Pure and Applied Sciences Vol. 2 No. 4 (2013): April - Education
  Difficult topics in junior secondary school mathematics: practical aspect of teaching and learning trigonometry
  Abstract  SJPAS-2013-24-161-174