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Abstrak. Literasi Saintifik (LS) adalah suatu kemampuan seseorang dalam menggunakan pengetahuan ilmiahnya, tidak hanya memahami konsep tetapi juga dapat mengaplikasikannya dalam kehidupan sehari-hari ataupun dalam mengambil suatu keputusan. LS itu sangat penting, sehingga negara-negara maju pun telah menjadikan LS sebagai program negara untuk mendongkrak kemampuan siswa dalam bidang sains. Negara Indonesia pun ikut serta dalam mengedepankan LS ini. Namun diketahui bahwa LS siswa Indonesia masih rendah. Terdapat indikasi bahwa pembelajaran sains yang dilakukan di kelas belum optimal dalam memfasilitasi siswa dalam melatihkan LS. Penelitian quasy-eksperimen dengan desain one group pretest and posttest dilakukan untuk mengetahui hasil LS setelah diterapkan scientific approach pada topik kalor. Penelitian dilakukan di salah satu SMPN di Kota Bandung dengan jumlah sampel 32 siswa melalui random sampling yaitu pengundian terhadap kelas. Instrumen yang digunakan sebanyak 20 soal berupa uraian (reliabilitas 0,83 dan validitas dari 0,38 -0,71) . Hasil analisis gain ternormalisasi menunjukkan bahwa domain kompetensi dan domain pengetahuan mengalami peningkatan dalam kategori sedang. Kata kunci: scientific approach, literasi saintifik, kalorAbstract. Scientific Literacy (SL) is a person's ability to use his scientific knowledge, not only to understand concepts but also to apply them in everyday life or in making decisions. SL is very important, so that developed countries have also made SL as a state program to boost students' skills in the field of science. State of Indonesia also participated in put forward this SL. But it is known that SL Indonesian students are still low. There is an indication that science learning conducted in the classroom has not been optimal in facilitating students in SL training. The quasyexperimental research with the design of one group pretest and posttest was done to find out the result of SL after scientific approach was applied on the topic of heat. The study was conducted in one of SMPN in Bandung City with the total sample of 32 students through random sampling that is drawing to the class. The instrument used 20 questions in the form of description (reliability 0.83 and validity of 0.38 -0.71). The result analysis shows that the competence domain and knowledge domain have increased in the medium category gain.

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Experimental studies have conducted problem based learning model with multirepresentation appoach for seeing the increase of learning achievement and scientific consistency. Research was implemented at one of senior high school in West Bandung. Multirepresentation approach (verbal, graph and math) that believed that able to make easier the students for learning concept in various representation. Pre-experiment method is used with one group pretest and posttest design. Research sample was one of tenth grade classes. The instrument to measure the learning achievement is in the form of multiple choice question which consist of twenty six questions, while scientific consistency was measured by multirepresentative three tier test based 21 questions which consist of seven concepts. These is an improvement between pretest and posttest result, it is categorized as medium with gain normalization of learning achievement 0,44 while gain normalization of scientific consistency 0,38. Futher, there is improvement scientific consistency level for whole elastic subject, four students in the consistency level, 13 students in enough consistency level and four students in the not consistency level. Based on the research result, there is tendency in multirepretation answers with students' multi intelegences level.

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