Abstract
Chemistry is a science that studies materials that are generally abstract in nature so many students find it difficult to understand the concept of chemistry which causes a lack of interaction between real life and chemical knowledge. This study aims to determine the effectiveness of the REACT strategy in improving student learning outcomes in buffering material at SMA Negeri 2 Langowan. The research method used is Quasi Experiment Design with research design is Posttest-only Control Group Design. The population is all students of class XI Science in SMA Negeri 2 Langowan even semester 2017/2018. The sample of this study were all students of class XI IPA 1, amounting to 25 people as the experimental class and all students of class XI IPA 2, amounting to 21 people as the control class. Data collected is processed from the results of Posttest. Data were analyzed using the Independent t-test formula to test the research hypotheses and obtained tcount> ttable (7.99> 2.02), so it can be concluded that the Contextual Teaching and Learning (CTL) learning method with REACT strategy proved to be effective against improving student learning outcomes in buffer material in class XI IPA of SMA Negeri 2 Langowan.
Highlights
Chemistry is a science that studies materials that are generally abstract in nature so many students find it difficult to understand the concept of chemistry which causes a lack of interaction between real life and chemical knowledge
This study aims to determine the effectiveness of the REACT strategy in improving student learning outcomes in buffering material at SMA Negeri 2 Langowan
9. Farid, A.; Nurhayati, S., Pengaruh Penerapan Strategi REACT terhadap Hasil Belajar Kimia Siswa Kelas XI
Summary
Data yang diperoleh dalam penelitian ini diambil dari dua kelas XI yang ada di SMA Negeri 2 Langowan, yaitu kelas XI IPA 1 dan kelas XI IPA 2. Jumlah siswa yang ada di kelas XI IPA 1 yang merupakan kelas eksperimen berjumlah 25 orang dan jumlah siswa di kelas XI IPA 2 sebagai kelas kontrol berjumlah 21 orang. Data penelitian ini diambil untuk mengetahui efektivitas strategi REACT terhadap hasil belajar siswa dalam mempelajari materi larutan penyangga. Pada penelitian ini data yang diambil adalah hasil belajar siswa yang didapat dari tes akhir (posttest) pada materi larutan penyangga. Berdasarkan hasil perhitungan data penelitian posttest dari 21 siswa dalam kelas kontrol diperoleh nilai terendah 50 dan nilai tertinggi 80. Hasil perhitungan data penelitian posttest dari 25 siswa dalam kelas eksperimen diperoleh nilai terendah adalah 70 dan nilai tertinggi 95.
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