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The purpose of this study was to identify students' changes of (i) interest toward STEM subjects and (ii) interest to pursuing STEM career after participating in non-formal integrated STEM education programme. The programme exposed students with integrated STEM education through project based learning involving the application of five phases engineering design process. Two cohorts of middle secondary students participated in 2014 (n=129) and 2015 (n=113) were involved in this study. The study utilized one group quasiexperimental design. The analysis revealed that, overall there is a significant increase in mean scores for interest towards STEM subjects and career after participating in the programme. The findings also indicated that the program was effective at modifying students' interest level as the result revealed positive changes (from moderate to high level) for both 2014 and 2015 groups for interest toward STEM career (42.6% and 69.9% respectively) and interest towards STEM subjects (45% and 82% respectively).

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This study is specifically designed to measure the effectiveness of Contextual Teaching and Learning (CTL) on the students' scientific attitude and achievement in Natural Science among Junior school students in Pekanbaru, Indonesia. This quasi experiment involved some 215 Form VII students from three public schools, segregated based on their existing cognitive abilities. The CTL materials was developed by applying RANGKA strategy. Overall, the findings revealed that there is significant difference exist across experimental groups in terms of students' achievement. However, there is no significant difference in terms of scientific attitude. These findings contribute significant implications for the enhancement of scientific thinking skills among various students' capabilities and different categories of school. Contextual teaching strategy is found appropriate in achieving the above dimensions in heterogeneous schools. This is due to the fact that the RANGKA contextual learning strategy as developed in this study focuses on the right way for students to learn.