Effect of Stimulus Variation Strategy on Students' Academic Achievement in Energy in Nasarawa State, Nigeria

The study investigated the effect of stimulus variation strategy on students' academic achievement in Energy in Nasarawa State, Nigeria. 17,807 males and 13,924 females were used as the population of the study. The sample comprised two intact classes with 138 JSH Students using multistage random sampling technique. The design used was a quasi- experimental pretest, posttest post posttest equivalent control design. Two research questions with correspondent hypotheses were used.The instruments used were: Energy Achievement Test (EAT). The validity and reliability indices were 0.83 and 0.81 using content validity and using Kuder-Richardson KR20. Description statistics of mean and standard deviation were used to answer the research questions, while inferential statistics of ANCOVA was used to test the hypothesis at 0.05 level of significant. The findings among others revealed that students who were taught Energy using stimulus variation strategy performed better than those taught using conventional method. The study therefore concludes that teaching students of Basic Science using stimulus variation strategy improved students' academic achievement of knowledge in Energy. Based on this finding, it is recommended among others that Energy teachers should be encouraged and develop and adopt the use of stimulus variation strategy in teaching Energy. Government should endeavor to organize regular workshops to train Energy teachers on development and use of these strategies at JSII level.