The research examined the effect of a teaching strategy emphasizing on instructional congruence on students' interests towards learning science. This study was conducted in three "low performing" secondary schools in Penang, Malaysia. There were 214 students involved in this study. A questionnaire was utilized to collect data on students' interest towards science. Data were analyzed using t-test. In general, findings showed that the implementation of this teaching strategy revealed a significant increase in students' interest towards learning science.