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All Journal Jupe-Jurnal Pendidikan Ekonomi PROSIDING SEMINAR KIMIA
Fadilah Ramadhani
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Chemistry Economics, Econometrics & Finance Education

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UPAYA PENINGKATAN KUALITAS PEMBELAJARAN AKUNTANSI MELALUI MODEL PEMBELAJARAN BERBASIS PROJEK (PROJECT BASED LEARNING) Ramadhani, Fadilah; Santosa, Sigit; Ngadiman, Dr
Jupe-Jurnal Pendidikan Ekonomi Vol 1, No 1 (2013): Jurnal Pendidikan Ekonomi (JUPE)
Publisher : Jupe-Jurnal Pendidikan Ekonomi

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Abstract

Abstrak : Penelitian ini menggunakan penelitian tindakan kelas yang dilaksanakan dalam dua siklus, masing-masing siklus terdiri atas perencanaan, pelaksanaan tindakan, observasi dan interpretasi, serta analisis dan refleksi. Subjek penelitian adalah siswa kelas XI IPS 1 SMA Negeri 3 Sukoharjo yang berjumlah 42 siswa. Validitas data menggunakan triangulasi sumber dan triangulasi metode. Untuk analisis data  menggunakan teknik analisis deskripstif kualitatif. Hasil penelitian menunjukkan bahwa melalui penerapan model pembelajaran berbasis projek(Project Based Learning) dapat meningkatkan kualitas pembelajaran akuntansi. Peningkatan kualitas pembelajaran tersebut terefleksidari proses dan hasil pembelajaran. Dari sisi proses pembelajaran, indikatornya adalah: (1) keaktifan siswa dalam apersepsi (2) Kekatifan siswa bekerjasama dalam kelompok selama kegiatan diskusi berlangsung, (3) Keaktifan siswa pada saat pembahasan hasil diskusi, mengajukan pertanyaan dan pendapat. Dari segi hasil pembelajaran, indikatornya adalah adanya peningkatan ketuntasan belajar siswa. Kata kunci: kualitaspembelajaran, project based learning Abstract: This study utilized a classroom action research which was  conducted in two cycles, each cycle consists of planning, action, observation and interpretation, as well as analysis and reflection. Subjects were 42 year  XI IPS 1 students at SMA Negeri 3 Sukoharjo. The data was validated using both techniques and  methods triangulation. The researcher utilized descriptive quanlitative analysis. The results showed that the implementation of project-based learning model  improve the quality of learning in accounting subejct among year XI IPS 1 students in SMA Negeri 3 Sukoharjo. The improvement was in the learning process and from the learning outcomes. The indicators of the learning process are: (1) increasing number of  active students during apperception, (2) the involvement of students  during the discussion increase, (3) the involvement of students during the discussion, ask questions and opinions increase. In terms of learning outcomes, the indicator is an increasing in student mastery. Keywords: quality of learning, project based learning
SYNTHESIS AND SWELLING PROPERTIES OF CHITOSAN-BASED HYDROGELS CROSSLINKED FORMALDEHYDE AND TRIPOLYPHOSPHATE Ramadhani, Fadilah; Pasaribu, Subur P.; Panggabean, Aman Sentosa
PROSIDING SEMINAR KIMIA Vol 2 No 1 (2023): Prosiding SNK 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Hydrogel is a hydrophilic polymer network that can experience swelling with the ability to absorb and retain large amounts of liquid without decomposing and is widely applied in the fields of health, environment and agriculture. The swelling properties of hydrogels are influenced by the type of tissue and the density of crosslinks that form it. In this study the hydrogel was prepared by stirring a 2% chitosan solution (w/v) as much as 7 mL with 3 ml of formaldehyde-tripolyphosphate crosslinking mixture at variations of 3:0, 2:1, 1:1, 1:2 and 0:3 (v/v) at room temperature and swelling tests were carried out by immersing each hydrogel produced in aquades for a span of 24 hours at the same temperature. Based on the observations, the gel formation time was 420, 97, 84, 75 and 58 minutes respectively which showed the lower the chitosan concentration and the higher the tripolyphosphate, the faster the gel formation process. Then the degree of consecutive sweling was 581.43; 78,23; 75,17; 48.85 and 20.97% (w/w) indicate that covalent cross-networks formed by amine groups on chitosan with aldehyde groups on formaldehyde are more stable and more difficult to degrade than physical cross-networks formed by groups on chitosan and tripolyphosphates. Keywords: Hydrogel, Crosslinking, Chitosan-tripolyphosphate, Degree of swelling.
Co-Authors Aman Sentosa Panggabean Andri Ernawati Dr Ngadiman Memen Surahman Sigit Santosa Subur P Pasaribu