school location and achievement.

This study investigated the effects of cooperative strategy class size and school location on student’s achievement in Basic Science in Potiskum, Yobe State. A true experimental research design was used for this study. The study also employed the use of proportionate stratified sampling technique to draw 256 students of JSSII basic science, from 14 junior secondary schools in Potiskum educational zones. The sample was drawn from urban and rural dichotomy and gender wise to ensure uniformity. One instrument consisting of Basic Science Achievement Test (BSAT) were administered to students’ to ascertain the effects of cooperative strategy class size and school location and the achievement of basic science students’. The Basic Science Achievement Test (BSAT) consisted of 20 multiple choice questions drawn from two basic science concepts. The questions were adopted from placement examinations in basic science from 2010-2014, of Yobe State Ministry of Education. T-test of independent sample was used to test the Null hypotheses at 0.05 level of significance. The result indicated that there was significant difference in the mean scores of students’ exposed to cooperative strategy than those exposed to lecture method. There was no significance in the mean scores of the male and female students exposed to cooperative strategy; there was a significant difference on the school location on students’ achievement in basic science in favor of urban schools. The study therefore recommended that teachers should employ cooperative strategy method so as to help or assist students’ to improve their achievement in basic science, Curriculum planners should examine the effectiveness of cooperative strategy and consider its suitability for the teaching of basic science concepts since it has the potential of bringing about meaningful learning and improved students’ achievement, Professionals and research organizations like the Science Teachers Association of Nigeria (STAN) and the Nigerian Educational and Research Development Council (NERDC) that carry out seminars, workshops and conferences should incorporate cooperative strategy in their curricula at the lower basic secondary level.