COMPARISON THE EFFECT OF JIGSAW AND DEMONSTRATION METHODS ON STUDENTS PERFORMANCE IN ACID- BASE REACTION.

<strong>ABSTRACT</strong>: This study endeavored to probe the effect of jigsaw and demonstration method on students’ skill acquisition, attitudinal change, and academic achievement in acid base reaction in Arbaminch secondary school. The research was designed both experimental, theoretical discussions and quasi type. The total population of students was 200 grade 12 science students. From these 50 were selected using simple random samplings. They were categorized in to two: 25 in jigsaw and 25 for demonstration. And the jigsaw was further divided into sub groups that contain 5 students each. Data were gathered through questionnaire, questions, observation at lab-activity and interview. Data was analyzed using percentage and interpretation .The results of the study indicated that jigsaw participants favored from cooperative learning. They also esteemed that using chemicals and materials by themselves for laboratory activity motivated them and this also positively influenced their learning attitude. They had developed skill on lab work. Their participation in laboratory activity increased their academic achievement. When compared with the demonstration group. However, the result from interview revealed that both groups admitted the need for laboratory work for the consolidation of theoretical concept. So, it was recommended that teachers, students and administration staff of the school should devotedly engage in the system for its effectiveness. It was also suggested that the study school should devise a strategy that strictly followed to involve students in laboratory activities to maximize benefit of students from Lab-activity.