ABSTRAK
Tujuan penelitian ini adalah untuk mengetahui: (1) Pengaruh penggunaan metode pembelajaran TGT berbantuan demonstrasi terhadap prestasi belajar siswa pada materi pokok Sistem Koloid; (2) Pengaruh kreativitas tinggi, sedang dan rendah terhadap prestasi belajar siswa pada materi pokok Sistem Koloid; (3) Interaksi antara metode pembelajaran TGT berbantuan demonstrasi dengan kreativitas terhadap prestasi belajar siswa padan materi pokok Sistem Koloid.
Penelitian ini menggunakan metode eksperimen dengan desain faktorial 2x3. Populasi penelitian ini adalah seluruh siswa kelas XI SMA Negeri Sumpiuh tahun ajaran 2011/ 2012. Sampel diambil dengan teknik Cluster Random Sampling sejumlah 2 kelas. Kelas eksperimen dikenai metode TGT berbantuan demonstrasi dan kelas kontrol dikenai metode konvensional. Pengumpulan data dilakukan menggunakan teknik tes dan nontes (angket). Teknik tes untuk prestasi kognitif, sedangkan teknik nontes (angket) untuk kreativitas. Analisis data menggunakan Analisis Variansi dua jalan dengan sel tak sama.
Berdasarkan hasil penelitian dapat disimpulkan bahwa: (1) Terdapat pengaruh penggunaan metode TGT berbantuan demonstrasi terhadap prestasi belajar siswa pada materi pokok sistem koloid (sig = 0,028 ), hal ini menunjukan bahwa pembelajaran dengan metode TGT berbantuan demonstrasi lebih efektif daripada metode ceramah. (2) Terdapat pengaruh kreativitas tinggi,sedang dan rendah terhadap prestasi belajar siswa( sig = 0,011 ), siswa yang memiliki kreativitas tinggi memperoleh rata-rata prestasi belajar lebih tinggi dibandingkan siswa yang memiliki kreativitas sedang maupun rendah. (3) Tidak ada interaksi antara metode TGT berbantuan demonstrasi dengan kreativitas terhadap prestasi belajar siswa( sig = 0,475 )
Kata Kunci: Teams Games Tournament, Demonstrasi, Kreativitas, Prestasi Belajar, Sistem Koloid

ABSTRACT
The purpose of this research is to find out: (1) The effect of TGT learning with demonstration method to the student’s achievement in the colloidal system subject matter, (2) the effect of high, medium, and low creativity toward to the student’s achievement in the colloidal system subject matter, (3) the interaction between TGT learning with demonstration method and creativity toward to the student’s achievement in the colloid system subject matter.
This research was used an experiment method with 2x3 factorial design. The population was the whole of class XI SMA Negeri Sumpiuh on the academic year of 2011/2012. Samples were taken with Cluster Random Sampling technique of 2 classes. TGT with demonstration method was applied to experiment classroom and conventional method was applied to control classroom. Data were collected using tests and non-test (questionnaire) technique. Technical tests for cognitive achievement, whereas non-test technique (questionnaire) for creativity. Data were analyzed using Variance analysis of two paths with the same cells.
Based on the result of research, it can be concluded that: (1) there was a different effect using TGT learning with demonstration toward to the student’s achievement in the colloidal system subject matter (sig = 0,028 ), it indicated that TGT with demonstration was more effective than lecture method. (2) There was a difference effect of high, medium, and low creativity toward to the student’s achievement ( sig = 0,011 ), students with high creativity get higher average achievement than students with medium and low creativity. (3) There was no interaction between TGT with demonstration method and creativity toward to the student’s achievement ( sig = 0,475 ).
Key Words: Teams Tournament, Demonstration Games, Creativity, Learning Achievement, Colloid Systems.