Tujuan penelitian ini adalah untuk mengetahui pengaruh model pembelajaran Guided Inquiry terhadap hasil belajar siswa dan keterampilan proses sains. Keterampilan proses sains yang digunakan dalam penelitian ini meliputi keterampilan mengobservasi, menginterpretasi data, berhipotesis, merencanakan percobaan, menerapkan konsep dan mengkomunikasikan data. Penelitian ini dilakukan pada bulan Mei 2015 di SMP Mulawarman Tarakan. Penelitian ini adalah eksperimen semu dengan populasi siswa kelas VIII dan sampel sebanyak 2 kelas. Pengambilan sampel menggunakan teknik purposive sampling. Teknik pengumpulan data menggunakan dokumentasi, dan tes uraian. Data tes dianalisis menggunakan software SPSS 16.0 for Windows. Teknik analisis data menggunakan uji-t. Analisis data diperoleh hasil menunjukkan bahwa t hitung (3.238) lebih besar dibandingkan t tabel (1,671). Demikian pula hasil uji-t data keterampilan proses sains siswa menunjukkan bahwa t hitung (2.385) lebih besar dari t tabel (1,684). Hal tersebut menunjukkan bahwa terdapat pengaruh model pembelajaran Guided Inquiry terhadap hasil belajar dan keterampilan proses sains siswa kelas VIII SMP Mulawarman Tarakan.

The purpose of this study is to know the effect of the Guided Inquiry model application on students process science skills. The process science skills used in this study include observing skills, skills to interpret observation, hypothesize skill, the planning of experiment skills, the skills to apply the concept, and communication skills.. This research was conducted may 2015 atSMP Mulawarman Tarakan. This is quasi-experimental research and the VIII grade and the sample taken from 2 classes. The technique sampling is purposive sampling. The sample used in the research was VIII-A as a class experiment using the Guided Inquiry model, and VIII-B as the control class using lecture learning. Design used a pretest-posttest control group design. Collection technique using the documentation, test description and observation of process science skills. Test data and observations were analyzed using SPSS 16.0 for Windows software. The test results were analyzed using ‘t’ test. The data analysis of both utilizes ‘t’ results (3.238) is greater than t table (1.671). Similarly, the t-test results of observation data process science skills students showed that t (2.385) is greater than t table (1.684). Therefore it indicates that there are significant effect of implementation Guided Inquiry Model Approach toward The Process Science Skills in Class VIII students of SMP Mulawarman Tarakan Tarakan.