This research is motivated by the problem of the learning methods of group discussion in the purpose of this study is to find out how to increase participation and learning outcomes in learning Integrated Social Sciences discussion methods in class VIII.3 in SMP 19 Padang. The results of data analysis show that learning group discussion models can increase student activity. Students have the courage to ask questions, communicate, answer questions from teachers, friends or other groups and dare to defend their opinions when discussing. Increased participation and Integrated Social Studies learning outcomes can be seen from the acquisition of student scores before being given action, which is an average of 74, to 78 in cycle I. Achievement of material completeness before the action was 8 students (26.67%), increasing to 12 students ( 40%) in cycle I. In the second cycle the average value increased to 83.77 and students who had achieved completeness 23 students (76.67%) at the end of the cycle test the average score of students became 87.1 students who had achieved completeness 26 students (86.67 %). From the results of the study, it can be concluded that the learning method of Group Discussion is able to increase student participation in class VIII. 3 at SMP N 19 Padang, because learning using the Group Discussion method can create an active, innovative, creative and enjoyable learning atmosphere.

Community forests in Gunungkidul have developed for a long time and are managed in a traditional way, known as pekarangan, moor and wono. Most of the community forest planting patterns found in Semoyo Village are agroforestry patterns, where trees are planted with a mix of various tree species and one type is dominated, for example teak or mahogany. This study aims to determine the differences in the shape of the diameter distribution of mahogany and teak in dry fields and yards which are dominated by one tree species. The method used is quantitative analysis to produce diameter distribution and draw a curve to describe the stand structure. The results showed that for the type of mahogany in the yard and moor in all class diameters, the number of trees was higher than teak. The diameter distribution of mahogany and teak both in the yard and dry land both showed a shape that resembled an inverted J and was successfully modeled using the exponential model.

Penelitian  ini  bertujuan  untuk  mengetahui apakah  ada  perbedaan keefektifan  pembelajaran  menggunakan  model  pembelajaran NHT dibandingkan  dengan  model TPS. Jenis  penelitian yang  digunakan  dalam  penelitian  ini  adalah  penelitian  eksperimen  semu menggunakan  model counterbalance design.  Subjek  penelitian ini  adalah siswa  kelas 5 SDN Boto 01 dan siswa kelas 5 SDN Boto 02. Teknik analisis data pada hasil penelitian ini menggunakan teknik deskriptif dan teknik statistik ANAVA. Dari uji ANAVA diperoleh hasil uji pada taraf signifikansi/probabilitas 0,000 karena nilai probabilitas < 0,05 maka hipotesis diterima. Maknanya hasil belajar Matematika pada siswa kelas 5 SDN Gugus R.A Kartini dalam penerapan pembelajaran model NHT lebih tinggi dari pada TPS. Perbedaan dari hasil belajar Matematika didukung dengan perbedaan rata-rata dari dua sampel, hasil belajar penerapan model NHT memperoleh rata-rata 78,67 sedangkan model pembelajaran TPS memperoleh rata-rata 73. Artinya adalah pemberian treatment model NHT memberikan dampak hasil belajar yang lebih tinggi dan berbeda dari model TPS.