Okello, Peter. Improvisation, use of analogies and students partcipation in seconda ry school science lessons in Gulu district / Peter Okello. - Kampala , 2015. - x, 110 p . ; 30 cm. Unpublished thesis (MED. SCI. EDUC. Biology)- Makerere University, 2 015. Includes bliblograpical references. Subjects--Topical Terms: Education, Secondary-- Uganda. High School Teaching. Science-- Study and teaching. Dewey Class. No.: 373