Penerapan Model Group Investigation terhadap Kemampuan Bertanya Siswa Materi Sistem Regulasi

Abstract

Penelitian ini bertujuan untuk mengatahui pengaruh penerapan model group investigation terhadap
kemampuan bertanya siswa pada materi sistem regulasi. Jenis penelitian pre-eksperimen
menggunakan desain one shot case study. Populasi penelitian adalah kelas XI MA Al-Irsyad
Demak semester II tahun ajaran 2015/2016. Sampel penelitian ditentukan secara total sampling,
yaitu kelas XI IPA 1 dan XI IPA 2. Pengumpulan data dilakukan dengan metode dokumentasi,
tes, observasi, dan angket. Kemampuan bertanya siswa dinilai secara lisan dan tertulis dengan
menggunakan instrumen yang telah divalidasi oleh dosen ahli. Hasil penelitian menunjukkan
bahwa persentase ketuntasan hasil belajar siswa secara klasikal ≥ 80% yaitu sebesar 93,78%.
Persentase siswa yang mendapatkan nilai kemampuan bertanya dengan kriteria minimal tinggi
mencapai 98,26%, dengan uji peningkatan kemampuan bertanya dari pertemuan pertama sampai
pertemuan kelima memperoleh kriteria tinggi dengan N-gain 0,703. Berdasarkan hasil analisis
hubungan kemampuan bertanya dan hasil belajar siswa, diperoleh jumlah kuadrat deviasi untuk
nilai Fhitung = 19,247 dengan persamaan regresinya adalah Y = 48,08 + 0,475 X artinya hasil
belajar siswa dapat bertambah sebesar 0,475 kali dari setiap satu satuan variabel kemampuan
bertanya siswa (X). Berdasarkan hasil analisis dan pembahasan, dapat disimpulkan bahwa
penerapan model group investigation pada materi pembelajaran sistem regulasi berhasil digunakan
dan berpengaruh terhadap kemampuan bertanya siswa.

The purpose of this study was to confirm the implementation of the model group investigation on the
student’s questioning ability on regulatory system material. This study is a pre-experimental research using
one shot case study design. The population in this study is two classes in grade XI of MA Al-Irsyad Demak
enrolled in the second semester of the 2015/2016 academic year. The sample research is determined by total
sampling, which is a class XI IPA 1 and XI IPA 2. The data collection is done by documentation, testing,
observation and questionnaires methods. Student’s questioning ability assessed orally and in writing using
the instrument that has been validated by two expert lecturers. The results showed that the percentage of
completeness of student learning outcomes classically is ≥ 80%, ie 93.87%. The percentage of student’s
questioning ability with a minimum high category is 98.26%, with student’s questioning ability an increase
from the first meeting until the fifth meeting of obtaining high criteria with N-gain 0,703. Based on the
analysis of student learning and student’s questioning ability, obtained the sum of squared deviations for the
value of F=19.247 with a regression equation is Y = 48.08 + 0.475 X, means student learning outcomes can
be increased by 0.475 times of each of the unit variable student’s questioning ability (X). Based on the
analysis and discussion, it was concluded that the application of the group investigation model on the
learning material regulatory system affects students' questioning ability.