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INDONESIA
PENA SAINS
ISSN : 24072311     EISSN : 25277634     DOI : -
Jurnal Pena Sains (p-ISSN: 2407-2311) (e-ISSN: 2527-7634) is published by Natural Science Education Study Program, University of Trunojoyo Madura as a medium to improve the creativity of lecturer, academics, practitioners, researchers, relating to the science education and science. The journal is published twice a year in April and October. Jurnal Pena Sains in collaboration with the Perkumpulan Pendidik IPA Indonesia (PPII).
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Articles 8 Documents
Search results for , issue " Vol 4, No 2 (2017): JURNAL PENA SAINS" : 8 Documents clear
DEVELOPMENT OF INTEGRATED ELECTROCHEMISTRY TEACHING MATERIAL BASED CONTEXTUAL FOR VOCATIONAL HIGH SCHOOL IN MACHINE ENGINEERING DEPARTEMENT Widodo, Wiwik
JURNAL PENA SAINS Vol 4, No 2 (2017): JURNAL PENA SAINS
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Abstract

The chemistry teaching at Vocational High School which tends to be theoretical and not directly connected to vocational lesson has caused students to have low interest, low motivation, and low achievement.  The problem is becoming more complex due to limited time allotment and limited teaching materials. One of the efforts to solve the problem is by providing the relevant teaching material using contextual learning approach.  The aims of this Research and Development (R&D) research are: (1) to produce an appropriate chemistry teaching material on electrochemistry integrated with skill program subjects using Contextual approach for Vocational High School students of  Machinery Engineering Department; (2) to know the feasibility of development result of teaching material. The development of the teaching material uses 4D developmental model from Thiagarajan et al consisting of four phases namely Define, Design, Develop, and Desiminate. The dominate phase was not done. The scores of evaluation of the feasibility or the appropriateness of the product from the content expert are 88.75% (very feasible) for the teachers’ book and 91.25%  (very feasible) for the students’ book. The expert on media gave 89.25% (very feasible) for the teachers’ book and 89.9% (very feasible) for the students’ book. The result of readability test shows that the teachers’ book is feasible (83.81%) and the students’ book is very feasible (93.61%).Keywords: Teaching material on electrochemistry, Machinery Engineering Department of Vocational High School, Contextual  Approach
INFLUENCING OF PROJECT-BASED LEARNING MODEL TOWARD SCIENCE PROCESS SKILLS ON ENVIRONMENT MANAGEMENT MATERIAL Nawawi, Sulton; Amilda, Amilda; Sari, Maya Puspita
JURNAL PENA SAINS Vol 4, No 2 (2017): JURNAL PENA SAINS
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Abstract

This study aims to determine the effect of the application of Project Based Learning Model to Skill of Science Process on Environmental Management Material. This research design uses posttest-only control design with Quasi-Experimental method (quasi-experiment). The sample of this research is 35 students. Based on the results of the analysis of students science process skills show that the implementation of learning using the model of Project Based Learning is better than the conventional learning model. This can be seen from the calculation of the test-t skills of the science process shows for sig tcount 0.000 <0,05, then Ha accepted and H0 rejected. The result of analysis of the average score of mastery of experimental science process skill class achieves 2.87 with good criteria while the students science process skill in control class 1.73 is sufficient to mean that the students experimental class science process skill is higher than the control class science process skill. Thus, it can be concluded that the model of Project Based Learning affects the Skills of Science Process on Environmental Management Material.Keywords: project based learning model; skills of science process.
HERB PLANT: INVENTORY AND PHYTOCHEMICAL SCREENING IN SAMPANG, MADURA Muharrami, Laila Khamsatul; Munawaroh, Fatimatul; Ersam, Taslim; Santoso, Mardi
JURNAL PENA SAINS Vol 4, No 2 (2017): JURNAL PENA SAINS
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Abstract

Currently, modern medicine has advanced rapidly but habits of drinking herbal medicine are still survived in Madurese society. The local wisdom of drinking herbal medicine in Madurese society, especially in Sampang Regency has been believed to be efficacious for generations. Average medicinal ingredients used are derived from natural ingredients taken from root organs, bark, leaves, fruit or seeds of herbs. This research aims to perform an inventory of herbs that have potential in improving the welfare of Madurese, especially in Sampang Regency. Type of research used is descriptive qualitative research method used is by conducting interviews to the community, IKOT owners, and herbalist.  Madurese herbs in Sampang. Based on the results of research, 46 herbs are obtained. Of 46 plants found there are 16 different types of herbs. Herbal plants that many people use (have a percentage of more than 50%) are jahe (Indonesian name), kunyit (Indonesian name), kencur (Indonesian name), kayu rapet (Indonesian name) and delima (Indonesian name).  The results of phytochemical screening of fifth herbs showed that positive herbal plants containing saponins were jahe (Indonesian name), kencur (Indonesian name), kayu rapet (Indonesian name) and delima (Indonesian name). And of the five samples, all positively contain secondary metabolites of flavonoids, tannins, and steroids.
INFLUENCING OF CHALLENGE BASED LEARNING MODEL TOWARD CRITICAL THINKING ABILITY OF THE STUDENTS ON ENVIRONMENT MATERIAL IN X GRADE AT SMA NEGERI 4 PRABUMULIH Nurlaili, Nurlaili; Afriansyah, Dini; Nuri, Yeni Atika
JURNAL PENA SAINS Vol 4, No 2 (2017): JURNAL PENA SAINS
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Abstract

This study aims to determine the effect of learning model Challenge Based Learning on the critical thinking ability of environmental materials. The research method used in this research is a quasi-experiment with Non-Equivalent Control Group Design research design. Sampling was used by using purposive sampling technique. The sample of this study class X.2 as the experiment amounted to 20 and class X.3 as the control class amounted to 21 students. The results of this study indicate that the average N-gain of the experimental class is 0.61 which is in the medium category and the average N-gain for the control class is 0.24 which belongs to the low category. Data analysis using t-test with significant level 0,05 obtained tcount = 5,674 while ttable = 1,685 seen that tcount> ttabel. Therefore (Ha) accepted and (H0) rejected thus can be concluded that the learning model of Challenge Based Learning has an effect on critical thinking ability of class X SMA 4 Prabumulih.
THE RHIZOSPHERE PGPR GRAMINEAE APPLICATION ON THE GROWTH RED GINGER (Zingiber officinale Var. Rubrum) Kurniahu, Hesti
JURNAL PENA SAINS Vol 4, No 2 (2017): JURNAL PENA SAINS
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Abstract

PGPR (Plant Growth Promoting Rhizobacteria) is a group of bacteria that colonize in the area of the rhizosphere. These groups of bacteria favor plant growth because they are able to mobilize and provide nutrients and phytohormones. The ability of the bacterial group can be utilized as a growth regulator in the red ginger nursery (Z. officinale Var Rubrum). This study aims to determine the optimal dosage of PGPR for the growth of red ginger seed (Z. officinale Var Rubrum). In this study, red ginger rhizome (Z. officinale Var Rubrum) was soaked with various concentrations of PGPR ie 0%, 25%, 50%, 75% and 100%. The results of this study indicate that soaking rhizomes using PGPR solution significantly influence the growth of red ginger seeds in the form of high seedlings, the number of shoots grow, the number of leaves and the mass of seedlings. A 25% dose has a better ability to boost the growth of seeds when compared to other doses.Keywords: Zingiber officinale Var. Rubrum, PGR, Phytohormone.
DEVELOPMENT OF BIOLOGY LEARNING INSTRUCTIONAL TO INCREASE STUDENTS’ ACHIEVEMENT AND SELF-DIRECTED BY SCIENCE PROCESS SKILLS APPROACH Putra, Armansyah; Agustini, Rudiana; Rahayu, Yuni Sri
JURNAL PENA SAINS Vol 4, No 2 (2017): JURNAL PENA SAINS
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Abstract

This research is aimed to develop biology learning materials in Junior High School for plants movement topic to increase students’ achievement and self-directed through Science Process Skill approach. This is development research refers to Kemp’s development model. The learning kit is taught in SMPN 1 Blega Bangkalan Madura for 28 students grade VIII employing science process skill approach. The research design uses One Group Pretest-Posttest and data is analyzed with the qualitative descriptive method. This research reveals that the implementation of learning kit is 83%, dominant student’s activities in 1st and 2nd learning process are observing (22% - 24%), most of the students have positive responses which are indicated by 99% of students expressing their like, the result of students’ learning mastery satisfies the classical criteria for 86%, the rate of students self-directed varies from 55,56% to 83,32%. Based on the data analysis, it can be concluded that the Development of Biology Learning Kit is feasible.Keywords: Achievement, Self-directed, Science Process skill approach.
THE PHYSICAL LABORATORY ACTIVITIES WITH PROBLEM SOLVING APPROACH TO INCREASE CRITICAL THINKING SKILL AND UNDERSTANDING STUDENT CONCEPT Trisnowati, Eli; Firdaus, Firdaus
JURNAL PENA SAINS Vol 4, No 2 (2017): JURNAL PENA SAINS
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Abstract

This study aims to investigate the description of the improvement of students’ critical thinking skills and the concept understanding by implementing the problem-solving approach. This study was in laboratory activities. This study was done in four times meeting. The try out subjects was 31 students of grades X of MAN Yogyakarta III. This research is using the quasi experimental method with the pretest-posttest design. The data were collected by using multiple choices tests with assessment rubric and observation sheets. The data are analyzed by using multivariate analysis. Based on the result, the gain standard value of students’ conceptual understanding and students’ critical thinking skills for grade X who learned through student’s worksheet with a problem-solving approach, called treatment class, are higher than students who learned without student’s worksheet with a problem-solving approach, called control class.  Keywords: concept understanding, critical thinking skills, laboratory activities, problem-solving approach. Kata Kunci: kegiatan laboratorium, keterampilan berpikir kritis, pemahaman konsep, pendekatan problem solving.
BIOREMEDIATION OF CONTAMINATED WASTE BY CADMIUM (Cd) IN WATERS USING INDIGEN BACTERIUM WITH EX-SITU WAY Wijayanti, Titik; Lestari, Dinna Eka G.
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Abstract

The bioremediation technique for a contaminated liquid waste of heavy metals using indigenous bacteria is a convenient alternative to steps continues to be developed. The research aims to find out the effectiveness of an indigenous bacterial consortium in bioremediation of contaminated liquid waste by cadmium by ex-situ. Experiments were arranged in RAL made in ex-situ where a liquid waste industry was given five treatments, namely control and four indigenous bacterial consortia (A, D, E, and J) obtained from the isolation of bacteria originating from cadmium-contaminated of waste in Pasuruan district. Furthermore conducted observations of BOD5, COD, d.o. and Cd for seven days to find out the effectiveness of bioremediation. The results showed the four indigenous bacteria consortia have the bioremediation ability to reduce levels of cadmium, BOD5, COD, and increasing levels of DO. Indigenous bacterial consortia D has the best ability of liquid industrial waste bioremediation by ex-situ. Indigenous bacterial consortia J has the best of capacity reduction levels of cadmium, then the other of indigenous bacterial consortia.Keywords: indigenous bacterial, bioremediation, ex-situ, cadmium, liquid waste.

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