Jigsaw is a well-known and frequently used technique in cooperative learning. As part of ongoing studies to develop the technique, this research concentrates on exploring its use with prospective elementary school teachers (PTs). In order to establish PTs' views regarding Jigsaw and its effectiveness on their academic success, a proficiency test and questionnaire were administered and observations were made. Eighty-one PTs from the Elementary Education Department at Cukurova University attending a math teaching course (MTC) participated. Forty-five of these participants were in the experimental group and 36 in the control group. Findings show that Jigsaw II had a positive effect (effect size=1.06) on PTs' academic success as well as on their views regarding the technique itself. (Contains 3 tables.)