<table width="645" border="1" cellspacing="0" cellpadding="0" align="left"><tbody><tr><td valign="top" width="439"><p><strong>Abstract:</strong> The purpose of this study is to analyze students' critical thinking especially on static fluid material through STEM PjBL accompanied by authentic assessment. The research design used mixed methods type embedded experimental design and the sample used in the study amounted to 32 students. Through the results of the analysis note that the learning process used is moderately influential on increasing students' critical thinking skills. In general, students experience an increase in all indicators of critical thinking.</p><p class="Abstract"><strong>Abstrak:</strong><em> </em>Penelitian ini bertujuan untuk menganalisis kemampuan berpikir kritis siswa khususnya dalam materi fluida statis melalui STEM PjBL disertai penilaian otentik. Rancangan penelitian yang digunakan ialah <em>mixed methods </em>tipe<em> embedded experimental design</em> dan sampel yang digunakan dalam penelitian berjumlah 32 siswa. Berdasarkan hasil analisis diketahui bahwa perlakuan yang diterapkan mampu meningkatkan kemampuan berpikir kritis siswa. Secara umum, siswa mengalami peningkatan pada semua indikator berpikir kritis.</p></td></tr></tbody></table>
In learning physics, students often have difficulty in understanding concepts. This certainly has an impact on students’ critical thinking skill. This study aims to analyze students’ critical thinking skills related to the concept of hydrostatic and Archimedes’ principle. This research was conducted using a qualitative descriptive design. The research subjects were students of class XII MIPA in Malang (N = 127). Data collection was carried out through a series of tests in the form of essay and interview questions. The indicator used to create critical thinking questions refers to the five main perspectives presented by Hughes. The results show that the majority of students have relatively low critical thinking skill. It is shown by the average score of critical thinking skill of students which only reached 36.1 from the maximum score of 90. The main cause of the low critical thinking skill of students was the presence of misconceptions experienced by students. The low critical thinking process of students are also caused by students have not yet accustomed to applying the concepts of physics in daily life.
Biomassa di Indonesia sangat melimpah, salah satunya berasal dari limbah pertanian. Jumlah limbah pertanian di Indonesia sebesar 51.546.297,3 ton. Kandungan pada biomassa dapat menghasilkan asap cair melalui proses pirolisis. Penelitian ini bertujuan untuk mengetahui pengaruh berbagai jenis biomassa terhadap kualitas asap cair hasil pirolisis. Jenis biomassa yang digunakan diantaranya tongkol jagung, sekam padi, dan ampas tebu. Biomassa dikeringkan di bawah sinar matahari kemudian dilakukan pengecilan ukuran. Biomassa sekam padi diperkecil hingga berukuran 0,3 cm; tongkol jagung 3 cm; dan ampas tebu berukuran 5 cm. Biomassa dipanaskan dalam reaktor pirolisis dengan sedikit atau tanpa oksigen yang sudah terhubung dengan kondensor. Pemanasan dilakukan pada suhu pirolisis 400 o C dalam waktu 30 menit dengan massa 1 kg. Produk asap yang keluar dari reaktor akan melewati kondensor tingkat atas dan kondensor tingkat bawah, kemudian hasil kondensasi ditampung sebagai produk asap cair. Hasil penelitian ini menunjukkan bahwa perbedaan jenis biomassa akan mempengaruhi kualitas asap cair hasil pirolisis berdasarkan nilai pH, densitas, dan rendemen. Pada analisa produk asap cair yang dihasilkan, tongkol jagung memberikan kualitas asap cair terbaik sesuai dengan standar mutu asap cair Jepang dengan nilai pH 3; densitas 1,0070 g/mL; dan rendemen 14,5%. Produk asap cair dari penelitian ini tergolong asap cair dengan grade paling rendah yaitu grade 3.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.