Penelitian ini bertujuan untuk mengetahui perbedaan peningkatkan hasil belajar siswa  MAN 1 Stabat melalui penerapan model Problem Based Learning (PBL) berbantuan media audio visual dan laboratorium riil pada pokok bahasan Asam Basa. Metode yang digunakan dalam penelitian ini adalah eksperimen dan pengambilan sampel dilakukan secara random sampling. Hasil penelitian menunjukkan, untuk kelas eksperimen 1 diperoleh nilai rata-rata tes awal sebesar 31,11 dan nilai tes akhir adalah 83,94, sementara untuk kelas eksperimen 2 diperoleh hasil nilai rata-rata tes awal adalah 32,66 dan nilai tes akhir adalah 79,60. Hasil uji normalitas dan homogenitas tes awal dan akhir menunjukkan data kedua kelas berdistribusi normal dan homogen. Hasil uji t pihak kanan diperoleh thitung = 2,36 dan ttabel = 1,9994, sehingga thitung>ttabel yang berarti Ha diterima. Berdasarkan data tersebut, dapat disimpulkan bahwa adanya peningkatan hasil belajar siswa MAN 1 Stabat melalui model Problem Based Learning (PBL) berbantuan media audio visual dibandingkan hasil belajar siswa melalui model Problem Based Learning (PBL) berbantuan laboratorium riiil  pada pokok bahasan Asam Basa.   This study aims to determine the differences in improving student learning outcomes of MAN 1 Stabat who use the application of the Problem Based Learning (PBL) model assisted by real audio-visual and laboratory media on the subject of Base Acid. The method used in this study is an experimental method. Sampling is done by random sampling. The results showed that for the experimental class 1, the average pretest score was 31.11 and the post-test value was 83.94, while for the experimental class 2 the results of the pretest average were 32.66, and the post-test score was 79.60. The results of the normality and homogeneity test from the pretest and posttest showed that the data of the two classes were normally distributed and homogeneous. The results of the t-test are tcount = 2.36 and ttable = 1.9994 so that tcount> ttabel which means Ha is accepted. Based on these data, it can be concluded that there is an increase in student learning outcomes of MAN 1 Stabat through the Problem Based Learning (PBL) model assisted by audiovisual media compared to the Problem Based Learning (PBL) model assisted by clinical laboratories on the topic of Acid-Base.

Tujuan penelitian ini yaitu, untuk mengetahui hasil belajar kimia pada siswa yng dibelajrkan dengan menerapkan model pembelajaran berbasis masalah dengan menggunakan media powerpoint lebih tinggi daripada siswa yang dibelajarkan dengan menggunakan konvensional pada materi Stoikiometri. Dalam penelitian ini populasinya yaitu seluruh siswa kelas X MIA SMA NEGERI 1 STABAT semester genap, tahun ajaran 2014/2015 sebanyak ±250 orang siswa, yang terdiri dari 6 kelas. Sedangkan sampel dalam penelitian ini sebanyak 2 kelas diambil secara purposive. Penelitian ini merupakan jenis eksperimental. Dari analisis data perhitungan diperoleh dari penelitian yang telah dilaksanakan, mengalami peningkatan hasil belajar kimia pada siswa yang dibelajarkan dengan menerapkan model pembelajaran berbasis masalah dengan menggunakan media powerpoint dengan hasil yang  lebih tinggi yaitu 83%, sedangkan pada siswa yang dibelajarkan dengan pembelajaran konvensional yaitu, 69%. Maka hasil pebedaan peningkatan hasil belajar siswa pada kelas eksperimen dengan kelas kontrol adalah 14%.   The purpose of this study is to find out the chemistry learning outcomes of students who are learning by applying a problem-based learning model using higher powerpoint media than students who are taught using conventional Stoichiometry lessons. This study employed experimental research that takes data from all students of class X MIA SMAN 1 STABAT in the even semester, 2014/2015 academic year as the population. There were about 250 students that consisted of 6 classes. While the samples in this study were two classes taken purposively. From the data analysis, it is known that there is an increase in student learning outcomes in chemistry subjects taught by applying a problem-based learning model using powerpoint with higher results of 83%, compared to students taught with conventional learning that is only 69%. Then the results of the improvement in student learning outcomes in the experimental class with the control class are 14%.

One effort to improve the quality of education in Indonesia was to develop teaching materials that are not yet in accordance with the national education standards. This study aims to analyze the suitability of teaching materials based on national education standard. This research was part of development research that uses quantitative and qualitative. The instrument of this study uses the feasibility assessment sheet of teaching materials in accordance with the national education standards. The research sample was conducted at the Tanjung Pura 1 State Vocational High School. There were three aspects of assessment of this book, namely the feasibility of content, the feasibility of language, and the feasibility of presentation using the type of linkert scale with a score of 1-4, with criteria: 4 = very good; 3 = good; 2 = not good; 1 = bad. The analysis used was descriptive analysis which was done by calculating the percentage value from the aspect of content, language and presentation. The results of the analysis of the quality of chemical teaching materials based on the national education standard body. 1) the feasibility of the contents of book A 2,4 and book B 2,9 , 2) the feasibility of language book A 2,5 and book B 2,6 and 3) the feasibility of presenting book A 2,7 and book B 2,4. After development 1) the feasibility of the contents of book 3,7 , 2) the feasibility of language book 3,4 and 3) the feasibility of presenting book 3,7.