ABSTRAK
Tujuan dari penelitian ini adalah untuk mengetahui: (1) pengaruh antarapenggunaanpembelajaranpenemuanmelaluimetodedemonstrasidandiskusiterhadaphasilbelajarsiswakelas XI IPA SMA Negeri 1 NgemplakBoyolali, (2) pengaruhmotivasibelajarsiswa yang dimilikisiswakelas XI IPA SMA Negeri 1 NgemplakBoyolaliterhadaphasilbelajarsiswa, dan (3)InteraksiantarapengaruhpenggunaanmetodepembelajarandemonstrasidandiskusidenganmotivasibelajarsiswapadamateriTeoriKinetik Gas kelas XI IPA SMA Negeri 1 NgemplakBoyolali.
Penelitian ini menggunakan metode eksperimen dengan desain faktorial 2 x 2 sel tak sama. Populasi penelitian ini adalah siswa kelas XI IPA SMAN 1 Ngemplak Boyolali tahun ajaran 2014/2015. Sampel terdiri dari 2 kelas, yaitu kelas XI IPA 3 sebagai kelas kontrol dan kelas XI IPA  4 sebagai kelas eksperimen yang dipilih secara cluster random sampling. Teknik pengumpulan data yaitu dengan teknik dokumentasi, teknik observasi dan teknik tes.  Teknik dokumentasi digunakan untuk memperoleh nilai keadaan awal yaitu nilai ulangan tengah semester genap. Teknik observasi digunakan untuk mengetahui motivasi belajar siswa menggunakan instrumen lembar observasi motivasi belajar. Teknik tes digunakan untuk mengetahui hasil belajar kognitif.
Analisis data penelitian ini terdiri dari analisis data keadaan awal siswa dengan uji t dua ekor dan analisis hipotesis penelitian menggunakan uji analisis variansi dua jalan yang harus memenuhi syarat uji normalitas dan uji homogenitas dengan taraf signifikansi 5 %.
Kesimpulan dari penelitian ini antara lain: (1) Adaperbedaanpengaruhantarapenggunaan model pembelajaranpenemuandenganmetodedemonstrasidanmetodediskusiterhadaphasilbelajarsiswapadamaterifisikaTeoriKinetik Gas. (2) AdapengaruhmotivasibelajarsiswaterhadaphasilbelajarsiswapadamateriTeoriKinetik Gas, dan (3) TidakadainteraksiantarapengaruhpenggunaanmetodepembelajarandemonstrasidandiskusidenganmotivasibelajarsiswapadamateriTeoriKinetik Gas.
Kata kunci    : metode demonstrasi, metode diskusi, hasil belajar, motivasi belajar
ABSTRACT
The aims of this research were to identify: (1) Effect between the use of discovery learning through demonstration method and discussion to the result of students’ learning in class XI Science SMA Negeri 1Ngemplak Boyolali, (2) Effect of students’ learning motivation in class XI Science SMA Negeri 1 NgemplakBoyolali to the result of students’ learning, and (3) An interaction between the effect of using demonstration method and discussion with students’ learning motivation in the matter of Kinetic Gas Theory to students class XI Science SMA Negeri 1 NgemplakBoyolali.
The method in this research was used experiment 2x2 factorial design with different cells. The population of this research was students class XI Science SMAN 1 NgemplakBoyolali Academic Year 2014/2015. The sample consisted of 2 classes, those were class XI Science 3 as control class and class XI Science 4 as experiment class that selected by cluster random sampling. The techniques of collecting data used were documentation technique, observation technique and test technique. Documentation technique was used to obtain value in the initial condition, that is middle semester even test value; observation technique was used to identify the students’ learning motivation with using observation sheet. Test technique was used to identify the result of cognitive learning.
The data analysis consisted of data analysis in students’ initial condition with two- tailed test and the research hypothesis analysis used two-way variance with analysis test that should fulfill the requirement of normality test and homogenity test with standard significance 5%.
The conclusions of this research are: (1) there was a difference effect between the use of discovery learning with demonstration method and discussion to the result of students’ learning in the matter of Kinetic Gas Theory, (2) there was an effect of students’ learning motivation to the result of students’ learning in the matter of Kinetic Gas Theory, and (3) there was no interaction between the effect of using demonstration method and discussion with students’ learning motivation in the matter of Kinetic Gas Theory.
Keywords: demonstration method, discussion method, learning result, learning motivation.