This study aims to determine whether the application of the Problem Based Learning (PBL) learning model can improve students' critical thinking skills and student learning outcomes in the environmental pollution material in class X SMA Negeri 1 Darussalam Aceh Besar. The research was conducted in class X of SMA 1 Darusalam Aceh Besar of 20 students. This research was carried out of 2 cycles. Student learning outcomes data are obtained by giving a test (evaluation) in the form of a description of environmental pollution material. The research results were analyzed by descriptive analysis techniques and percentages. The results of observations of students' critical thinking abilities which showed an increase from cycle I to cycle II which was 59.75% in cycle I to 75.25% in cycle II. And student learning outcomes also increased from 70% in the first cycle to 85% in the second cycle. Based on the results of the research, it can be concluded that the application of Problem Based Learning (PBL) learning models can improve critical thinking skills and student learning outcomes.

ABSTRAKCorporate social responsibility merupakan salah satu bentuk kepatutan yang diberikan oleh perusahaan kepada masyarakat yang berada di sekitar perusahaan. Adanya tanggungjawab sosial perusahaan ini dapat memberikan sebuah perubahan positif di dalam kehidupan masyarakat atau komunitas. Pelaksanaan program corporate social responsibility oleh perusahaan seharusnya dapat memunculkan kemandirian masyarakat, karena dalam corporate social responsibility sendiri terdapat tipe implementasi pemberdayaan. Oleh sebab itu, perusahaan perlu mengedepankan program corporate social responsibility yang dapat meningkatkan kemandirian dan meningkatkan kesejahteraan masyarakat yang menjadi sasaran dalam target program. Pemberdayaan masyarakat menjadi salah satu upaya dan metode yang dapat digunakan oleh perusahaan dalam menciptakan kondisi masyarakat yang aktif, partisipatif dan mandiri. Hal ini dikarenakan dalam pemberdayaan masyarakat mendorong terciptanya masyarakat yang aktif dan partisipatif untuk mencapai tujuan yang ingin dicapai. Dengan demikian, jika sebauh perusahaan merancang program-program corporate social responsibility yang bertujuan untuk memandirikan masyarakat maka perusahaan harus menggunaka metode pemberdayaan masyarakat agar tercapainya pelaksanaan program corporate social responsibility yang membuat masyarakat menjadi berdaya, mandiri dan tidak ketergantungan. ABSTRACTCorporate social responsibility is one form of propriety provided by companies around the company. The existence of corporate social responsibility can provide positive responsibility in the life of the community or community. Implementing corporate social responsibility programs by companies that can bring about community independence, because in corporate social responsibility itself there is implementation of empowerment. Therefore, companies need to prioritize corporate social responsibility programs that can increase independence and improve the ability of the people who are targeted in the target program. Community empowerment is one of the efforts and methods that can be used by companies in creating conditions for an active, participatory and independent society. This is because in community empowerment the creation of an active and participatory community to achieve the goals to be achieved. Thus, if a company is adjusted to corporate social responsibility programs that aim to empower the community, the company must use the method of community empowerment to achieve the implementation of corporate social responsibility programs that make the community empowered, independent and not dependent.

Makroalga is a large algae with a thallus body structure and has a chlorophyll pigment. Macroalga has an important role in marine waters both ecologically and economically. This study aims to provide information about the diversity of macroalgae in the waters of the Hari Island and the wealth of macroalgae in South East Sulawesi. The study was conducted in the waters of Hari Island, South East Sulawesi from mei to juli 2016. The observation was done by observing all types of macroalgae found in the area traversed. The results of the study found that the number of macroalgae species consisted of 25 species consisting of 11 orders, 14 families, 17 genera. The species composition was dominated by chlorophyta class (44%), rhodophyta class (28%) and phaeophyta class (28%). The water quality of Hari Island waters is still within the range that supports macroalgae growth. Keywords: Composition, macroalgae, Hari Island AbstrakMakroalga merupakan alga yang berukuran besar dengan struktur tubuh berupa thallus dan memiliki pigmen klorofil. Makroalga memiliki peranan penting di perairan laut baik secara ekologi maupun ekonomi. Penelitian ini bertujuan untuk memberikan informasi tentang keanekaragaman jenis makroalga di perairan Pulau Hari, sehingga diharapkan dapat memberikan gambaran kekayaan makroalga di Sulawesi Tenggara. Penelitian dilaksanakan di perairan Pulau Hari Kabupaten Konawe Selatan pada bulan mei-juli 2016. Pengamatan dilakukan dengan sistim jelajah yaitu mengamati semua jenis makroalga yang ditemukan pada area yang dilalui. Hasil penelitian jumlah jenis makroalga yang ditemukan terdiri atas 25 spesies yang meliputi 11 ordo, 14 famili, 17 genus. Komposisi jenis didominasi oleh kelas Chlorophyta (44 %), kelas Rhodophyta (28 %) dan kelas Phaeophyta (28 %). Kualitas air di perairan Pulau Hari masih berada dalam kisaran yang mendukung pertumbuhan makroalga. Kata kunci: Komposisi jenis, makroalga, pulau hari

Penelitian ini merupakan penelitian pengembangan yang bertujuan menghasilkan CD Multimedia Interaktif berbasis model PBL yang dapat digunakan siswa kelas V SD Islam YAAK Ampang Kuranji, Kabupaten Dharmasraya sebagai media pembelajaran. Mengetahui kualitas dari CD multimedia interaktif berbasis model PBL tersebut dilakukan uji validitas, pratikalitas, dan efektifitas. Berdasarkan uji validitas penilaian yangdilakukan oleh ahli media, ahli materi dan pembelajaran, Model pengembangan yang digunakan adalah 4D terdiri atas 4 tahap utama yaitu, Define (pembatas), Design (perancangan), Develop (pengembangan) dan Disseminate (Penyebaran). Pengembangan CD Multimedia ini dimulai dengan cara analisis kebutuhan siswa, analisis standar Isi dilanjutkan dengan pengumpulan referensi media kemudian penyusunan rancangan media, dan membuat CD multimedia interaktif. Multimedia interaktif yang telah dibuat dikonsultasikan dan dinilaikan kepada para pakar yaitu ahli materi pembelajaran, ahli media, ahli bahasa, dan siswa kelas besar

The purpose of this research is to know how much influence of financial knowledge, the influence of financial attitude and the influence of personality towards financial management behavior on SMEs at Home Industrial Food on Air Putih Disctricts of Batubara Regency. This research is a quantitative study with a data-collection technique using a questionnaire. This research subject is the whole business of SMEs the Home-cooked culinary Industry, total of 45 SMEs subject. The sample retrieval technique used was non probability sampling through the saturated sampling method. The criteria established are at home culinary industries that make it about income a mounth, old business and number of employees. Primary data processing uses analysis technique statistical package for social science (SPSS) with multiple regression analysis methods and strip analysis. This research there was positive influence of financial knowledge towards financial management behavior, where as negative influence of financial attitude towards financial management behavior on SMEs temporary there was positive influence of personality towards financial management behavior on SMEs Home culinary Industry Air Putih district of Batubara Regency.