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EduChemia: Jurnal Kimia dan Pendidikan
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 25024778     EISSN : 25024787     DOI : http://dx.doi.org/10.30870/educhemia.v6i2.10412
Core Subject : Science, Education, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Materials Science & Nanotechnology
Focus and Scope Educhemia (Jurnal Kimia dan Pendidikan) is Periodicals published the results of research related to the development of science and technology in the field of Chemistry and Chemistry education as a form of intellectual property Chemistry: Organic chemistry, Inorganic chemistry, Biochemistry, Physical chemistry, Analytical Chemistry, Environmental Chemistry, Material chemistry, Ethnochemistry. Chemistry education: chemistry learning design and model, chemical education curricula, Technology innovation and media/multimedia in chemistry learning, development of evaluation tools, lesson study and classroom action research
Arjuna Subject : Kimia(semua kategori) - Kimia Organik
Articles 12 Documents
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Search results for , issue "Vol 5, No 2 (2020)" : 12 Documents clear
Antileukemic Activity of Methanol Extract From Stem of Baccaurea macrocarpa, Syzygium jambos, Bouea macrophylla Griff., and Diospyros discolor Willd Antoni Pardede; Rr Ariessanty Alicia Kusuma Wardhani; Emilda Frasisca
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 2 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (211.992 KB) | DOI: 10.30870/educhemia.v5i2.8320

Abstract

A secondary metabolite is a compound produced by plants that are needed for its survival. Those compounds are used as attractant, repellant, and protectant. The three of them, such as color, taste, aroma, and thorns of the plants. These secondary metabolite compounds are important to be revealed. It aims to find new natural resources that are safer, more effective, and efficient in aiding the health sector, such as anticancer, antibacterial, and hepatoprotective and antioxidant properties. The research trends of natural products chemistry sourced from plants that are widely developing are extraction and biological activity, such as anticancer. In this research, the extraction of 1 kg sample was done by using maceration method and produced methanol extract of kapul (Baccaurea macrocarpa) 3.1%, jambu mawar (Syzygium jambos) 2.4%, ramania (Bouea macrophylla Griff) 9% and mentega (Diospyros discolor Willd) 2.7%, and the result of antileukemic activity of methanol extract sample (the survived HL-60 cell percentage) sequentially were 22.6%, 12.7%, 44.1% and 37.3% with the concentration of 100 µg/mL. Jambu mawar (Syzygium jambos) exhibited the highest antileukemic activity with the survived cell percentage (HL-60 cells) of 12.7% among the methanol extract of samples tested.
Development of Multiple Representation-Based General Chemistry Textbook Using Guided Inquiry Ifah Silfianah
EduChemia (Jurnal Kimia dan Pendidikan) Vol 5, No 2 (2020)
Publisher : Department of Chemical Education Faculty of Teacher Training and Education Universitas Su

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (364.097 KB) | DOI: 10.30870/educhemia.v5i2.7508

Abstract

This study aims to describe the development process and determine the feasibility of multiple representation-based textbooks that are designed with a guided inquiry model. The method used in this research is the Research & Development (R&D) with the ADDIE (Analyze, Design, Develop, Implementation, Evaluate) model. Analyze stages are carried out in the form of curriculum analysis, concepts, and learning resources. In the design process, textbooks are made following the guided inquiry learning stages and design the media in the form of images that show multiple representations so that an initial draft is produced. At the Develop stage, draft books are printed and reproduced for validation and revision. The next step of implementation is carried out through a small-scale trial to determine the initial response to the textbook. In the final stage (Evaluation), the textbook on the results of the small-scale trial was revised to be used in the medium-scale trial to get the textbook's final response data. This study involved ten students in the chemical Tadris department in the small group and 29 students in the moderate group. The instrument used was the validation sheet and the language response sheet and the presentation of the textbook.  Data of expert validation and trial results were analyzed descriptively and qualitatively in the form of percentages using a Likert scale. The results showed the feasibility of the content, linguistic, presentation, and graphic textbooks, respectively 95.33%, 94.76%, 92.16%, and 92.58%. The suitability of the textbooks with the guided inquiry syntax and multiple presentations was 98.33% each. A small group trial shows that the language aspect gets 84.33 scores, and the presentation aspect is 84.75. After the textbook was revised, the trial results for the medium group showed that the linguistic aspect value was 90.34, and the presentation aspect was 92.59. Overall it can be concluded that the textbooks developed are very suitable for use in learning.

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