PENINGKATAN KETERAMPILAN PROSES SAINS SISWA PADA MATERI PENCEMARAN LINGKUNGAN MELALUI MODEL PEMBELAJARAN PROBLEM BASED LEARNING

IMPROVEMENT OF STUDENTS’ SCIENCE PROCESS SKILLS ON ENVIRONMENTAL POLLUTION MATERIAL THROUGH PROBLEM BASED LEARNING MODEL

ABSTRAK

Penelitian ini bertujuan untuk mendeskripsikan peningkatan keterampilan proses sains siswa pada materi pencemaran lingkungan melalui model pembelajaran problem based learning. Partisipan penelitian ini adalah siswa kelas VII-A dan kelas VII-B SMP di Kabupaten Lamongan. Penelitian ini merupakan penelitian pre-experimental dengan desain penelitian one group pre-test and post-test design menggunakan satu kelas eksperimen dan satu kelas replikasi. Metode pengumpulan data yang digunakan adalah metode tes. Data hasil tes dianalisis secara statistika dengan uji normalitas, uji homogenitas, uji N-gain dan uji-t tidak  berpasangan. Indikator keterampilan proses sains yang dilatihkan dalam penelitian ini meliputi merumuskan masalah, merumuskan hipotesis, mengidentifikasi variabel, menganalisis data, dan menarik kesimpulan. Berdasarkan hasil penelitian yang telah dilakukan menunjukkan bahwa terdapat peningkatan keterampilan proses sains pada tiap indikatornya secara klasikal dengan perolehan N-Gain pada kelas VII-A secara berturut-turut adalah 0,70; 0,68; 0,76; 0,66; dan 0,64 dengan rata-rata peningkatan keterampilan proses sains siswa sebesar 0,69 kategori sedang. Sedangkan pada kelas VII-B memperoleh hasil secara berturut-turut 0,71; 0,68; 0,76; 0,66; dan 0,64 dengan rata-rata peningkatan keterampilan proses sains siswa sebesar 0,67 kategori sedang. Peningkatan yang terjadi menunjukkan bahwa tidak ada perbedaan yang signifikan pada rerata peningkatan keterampilan proses sains siswa di kelas VII-A dan kelas VII-B. Kesimpulan dari penelitian ini adalah terdapat pengaruh model pembelajaran problem based learning dengan keterampilan proses sains yaitu model pembelajaran problem based learning dapat meningkatkan keterampilan proses sains siswa.

Kata Kunci: keterampilan proses sains, problem based learning, pencemaran lingkungan.

ABSTRACT

This study aims to describe the improvement of science process skills of students in environmental pollution material through problem based learning models. The participants of this study were students of class VII-A and class VII-B junior high school in Lamongan district. This research is a pre-experimental research with one group pre-test and post-test design using one experimental class and one replication class. Data collection methods that are used test methods. Test data were analyzed statistically with normality test, homogeneity test, N-Gain test and independent t-test. Indicators of science process skills trained in study include formulating problems, formulating hypotheses, identifying variables, analyzing data, and drawing conclusions. Based on the results of research that has been done shows that there is science process skills improvement in each indicator classically with the acquisition of N-Gain in class VII-A in a row is 0.70; 0.68; 0.76; 0.66; and 0.64 with average improvement in students' science process skills by 0.69 in the medium category. Whereas in class VII-B get the results 0.71; 0.68; 0.76; 0.66; and 0.64 with average improvement in students' science process skills by 0.67 in the medium category. The improvement that occurs show that there is no significant difference in the average improvement of students’ science process skills in class VII-A and class VII-B. The conclusion of this study is that there is an influence of problem based learning model with science process skills, namely problem based learning model can improve science process skills.

Keywords: science process skills, problem based learning, environmental pollution.