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Jurnal Pendidikan Kimia (JPKim)

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Published by Universitas Negeri Medan

ISSN : 20853653 EISSN : 25493116 DOI : 10.24114

Core Subject : Science, Education, Social,

Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science

Jurnal Pendidikan Kimia (JPKim) yang dikelola Program Pascasarjana Universitas Negeri Medan terbit 3 kali setahun, yakni bulan April, Agustus dan Desember. JPKim menerbitkan artikel ilmiah hasil-hasil penelitian pendidikan kimia dan kimia fundamental. JPKim juga menerbitkan artikel Review terkait Pendidikan Kimia dan Kimia.

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Articles 352 Documents

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Upaya Meningkatkan Kreativitas Siswa Dalam Pembelajaran Biologi Melalui Penerapan Model Pembelajaran Kooperatif Type Jigsaw di SMA Negeri 2 Balige Pasno Lingga
Jurnal Pendidikan Kimia (JPKim) Vol 7, No 2 (2015): Agustus
Publisher : Pascasarjana Universitas Negeri Medan

Abstract. This classroom action research is executed in class XI IA2 Semester 2 of SMA Negeri 2 Balige academic year 2011/2012, aim to know whether model of co-operative of leraning Jigsaw type can improve student creativity in course study of Biology at System Hormone and Indra. Research of method is taken by writing down dominant perception category emerge during take place at perception sheet ( Instrument). In intake of data, researcher presents directly of study items as many as 4 cycle. Every cycle consists of four phrases. They are planning, action, observation, and Reflection. Every cycle assisted by 2 people as observer to collect uppermost student creativity data at the same time give suggestion / inputs repair of study process. Cycle of I by applying conventional method (discussion and discourse) while cycle of II, III, and IV by applying model of co-operative of learning Jigsaw type. From result of observation and perception analyse data obtained by conclusion that model of co-operative of learning Jigsaw type can improve class student creativity of XI IA2 SMA Negeri 2 Balige in course study of Biology hormone system and Indra of student creativity mean 59,80 at conventional study become 77,13 (the first group) and 85 % ( expert team), second cycle, 83,24 (the first group) and 92,95% ( expert team), third cycle and 85,09 ( the first) and 95,45 % (expert team) at fourth cycle by applying model study of jigsaw. The result of examination with using convensional method only 8 students, but using model of cooperative of learning jigsaw type, the student can be able more b competence and improving to be 22 student. The conclution of the study shows that implementation cooperative of learning jigsaw type accompany with modul about contamination and enviromental change can improve student learning activity in class XI IA2 at SMA Negeri 2 Balige in academic year 2011/2012. Keywords: Cooperative Learning model, Jigsaw, creativity student

Natural mouthwash of sarang banua leaves (Clerodendrum fragrans Vent Willd) extractas a healthy solution during the covid-19 pandemic Julianse Lydia Nababan; Titin Evania Manalu; Ratu Nurul Aulia; Anna Lestari; Angga Koswara Malau; Murniaty Simorangkir
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

The spread of the COVID-19 virus has shaken the world. The application of Clean and Healthy Living Behavior (CHLB) is the best effort to prevent the transmission of the Covid-19 virus. Maintaining oral and dental hygiene can improve health, especially during the COVID-19 pandemic. Sarang Banua (Clerodendrum fragrans Vent Willd) is a local plant of North Sumatra, containing secondary metabolites of alkaloids, steroids, flavonoids, triterpenoids, saponins, tannins, and quinones that have bioactivity such as antibacterial and antioxidant. The preparation of Sarang Banua mouthwash (SABANA) made from the extract of the sarang banua leaves with a concentration of 0.5 grams in 100 ml of preparation (0.5%) has been formulated, evaluated by organoleptic, pH and antibacterial test. The results of organoleptic and pH tests showed that SABANA mouthwash preparations were brown and slightly cloudy, tasted very distinctive, fresh, and eliminated bad breath with a pH of 7 in accordance with quality standards. About 70% of the panelists stated that they really liked the color, aroma, taste and appearance of SABANA mouthwash preparations. The results of antibacterial test against the oral bacteria Streptococcus mutans ATCC (25175) showed that 0.5% and 0.75% of the oral antibacterial mouthwash was found to be effective as oral antibacterial with an average inhibition zone diameter of 16.55 and 16.9 mm. Through the activities of the Student Creativity-Entrepreneurship Program, SABANA mouthwash have been produced and marketed in the local as well as outside the city by online and offline-shop and have the opportunity to develop into a new entrepreneur. Keywords: Mouthwash, Clerodenrum fragrans Vent Willd, antibacterial, streptococcus mutans

The effectiveness of modified flip-based argumentation learning in improving students’ argumentation skills about hydrocarbon Agustiningsih Agustiningsih; Ngatijo Ngatijo; Muhammad Haris Effendi-Hasibuan
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

The FBAL learning model is a learning model that has a specific purpose to improve students’ argumentation skills by integrating Toulmin's argumentation pattern. This study aimed to see the effectiveness of the Modified Flip-Based Argumentation Learning in improving students' argumentation skills about the concept of hydrocarbon compounds. The effectiveness was examined by comparing this model to Flip-Based Argumentation Learning and Flipped Classroom model. The factors that influence the differences in students’ argumentation skills amongst the three classes were also investigated. Concurrent embedded mix method design was used in this study. Some 93 students of 11 grade of SMA Negeri 1 Merangin Jambi were participated in this study. Data were collected using argumentation test (pre-test and post-test) and observations. The results showed that there was no difference between the Modified FBAL and FBAL in improving the students’ argumentation skills but both were different from the Flipped Classroom. The N-gain was 0.80 and 0.81 respectively for the Modified FBAL and FBAL. However, those were higher than the N-Gain of Flipped Classroom which was 0.71. Difference in providing the students with opportunities to practice their argumentation skills amongst the three models was the major factors influencing the students' argumentation skills in the three classes. Keywords: argumentation skills, flip based argumentation learning, modified FBAL, flipped classroom, hydrocarbon compounds

Analysis of online learning based edmodo in pandemic era in atomic structure classes x at senior high school harapan 1 Medan Hamidatun Nisa; Fathia Namira; Jasmidi Jasmidi; Ajat Sudrajat; Tita Juwitaningsih
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

Education in Indonesia since middle-March 2020 has undergone significant changes. Online learning to answer questions is a solution to the virus problem that has spread to cut cases of the Covid-19 virus using online media. Edmodo is a learning application that the application can use in bold type learning, including atomic structure material. This study analyzes the Edmodo-based understanding used for learning media on atomic structure material and how students respond to the Edmodo application in chemistry learning, especially atomic structure material. The research method used is descriptive qualitative. The results showed that the effectiveness of learning was 69%, application sustainability during the pandemic was 76%, ease of access was 97%, ease of communication was 61%, the clear assessment was 84%, and understanding of the material Edmodo was 59%. Implementing chemistry learning consists of (1) choosing Edmodo as a bold learning medium in chemistry learning based on analyzing student needs with reasoning and mastery of applications; (2) planning the application as a student learning medium as described in the Semester Learning Plan; (3) implementation in Edmodo-based online learning is carried out well and smoothly based on semester learning plan; and (4) edmodo as an application can help carry out chemistry learning in atomic structure subjects to measure student learning outcomes. So it can be concluded that Edmodo is a practical application to use during the Pandemic of Covid-19. Keywords: Covid-19 virus, edmodo, implementation of edmodo, online learning

The effect of STEM approach e-module -topic of free-range chicken eggs productivity on student learning outcomes in entrepreneurship courses in the era of the industrial revolution 4.0 K Anom W; Made Sukaryawan; Eka Ad’hiya
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

The use of technology in the form of e-modules in entrepreneurship courses in the chemistry education study program, Universitas Sriwijaya is a challenge for learning in the industrial revolution era 4.0. So this study aims to determine the effect of STEM approach e-module- topic of the productivity of free-range chicken eggs on student learning outcomes in entrepreneurship courses in the era of the industrial revolution 4.0. Respondents of this study were students in the third semester of the chemical education study program at the Sriwijaya University. This research method is a quasi-experimental method, where a limited field test is carried out on previously developed e-modules. Data on student learning outcomes were obtained from the pre-test and post-test scores which were analyzed by N-Gain. The results showed that the N-Gain value was 0.937 which was classified as high category, which means that there was a significant difference in student learning outcomes before and after using the STEM e-module approach. Beside that, respondents have reported examples of creativity in business plan as a result of using STEM approach e-module- topic of free-range chicken egg productivity for the Entrepreneurship Course in Chemistry Education. Thus, it can be concluded that there is an effect of using STEM approach module-topic of free-range chicken eggs productivity on student learning outcomes in entrepreneurship courses in the chemistry education study program, Universitas Sriwijaya. Keywords: e-module learning chemistry, industrial revolution 4.0, free-range chicken eggs

The effect of colloids practicum e-module to improve students’ interest on virtual lab during the covid-19 pandemic Nelius Harefa; Novia Fransisca Dewi Silalahi; Leony Sanga Lamsari Purba; Herna Febrianty Sianipar
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

Practical learning which is generally carried out in the laboratory is one of the important lessons in the science learning process, especially chemistry. The Covid-19 pandemic has caused practical learning activities to not be accommodated in real laboratories. This situation encourages the creation of practical learning innovations, namely the use of virtual labs. In this study, students' learning interest in the use of virtual labs is described which is integrated with the use of e-modules on colloidal material. Based on the results of data analysis, 74.55% of students were interested in using the virtual lab, 10.90% very interested, 12.73% quite interested, and 1.82% lack of interested. These data indicate that the majority of students can make good use of the virtual lab and are able to optimally elaborate on the learning process. However, virtual labs are not intended to replace real laboratories but can be used as supplements and media to support learning in real laboratories.Keywords: Colloids, Practicum, e-module, Virtual Lab

Students’ learning outcomes on hydrocarbon materials through mind mapping method Andriani Andriani; Nelius Harefa; Elferida Sormin; St Fatimah Azzahra
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

The purpose of this study was to determine the effect of the Mind Mapping learning method on student learning outcomes in class XI MIPA SMAN 1 Siberut Tengah on hydrocarbon material. The research sample amounted to 28 students, who were selected using the Purpose Sampling technique. The instrument used was a test instrument for chemistry learning outcomes, in the form of pretest and posttest which were analyzed using SPSS 22 for window to determine the results of the T-test on the Independent Sample Test. Normality test using Shapiro-Wilk test on sig. > 0.05 that is equal to 0.034. The results of hypothesis testing using the Independent Sample Test which shows that the value of sig. (2-tailed) 0.000 < 0.05, which means Ha is accepted. Thus, it is concluded that there is an effect of using Mind Mapping to improve student chemistry learning outcomes. Keywords: Hydrocarbon materials, learning outcomes, mind mapping method

Discovery learning model to optimize students’ critical thinking skills on hydrocarbon material Tesa Lonika Yuniawati; Friska Juliana Purba
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

Learning in 21st century requires an advance human mindset, especially critical thinking skills. Critical thinking skills improve the learning process to be more optimal in taking the core of the learning. However, data shows that the critical thinking skills of class XI IPA 2 students are still lacking because they have not been able to answer the analytical questions which is this is the important skills for the students. This paper aims to describe the use of discovery learning models to optimize students' critical thinking skills. The research method used is descriptive qualitative. The research subjects were 28 students of class XI IPA 2 in one of the senior high schools in Jakarta in the academic year 2021/2022 odd semester. Based on the study and data on each indicator, it was found that the use of discovery learning models was able to optimize students' critical thinking skills. Each step in the discovery learning model facilitates the achievement of indicators of critical thinking skills. Keywords: Critical thinking, discovery learning, learning in 21st century

Biodegradable plastic modification from durian seed starch and shrimp chitosan with the addition of plasticiziers glycerol and polyglycerol using microwaves Saud Salomo; Astri Devi Br Pakpahan; Dea Gracella Siagian; Grecy Kristina Tampubolon; Salsabila Afani; Eddiyanto Eddiyanto; Junifa Layla Sihombing
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

Plastic waste takes up to 450 years to decompose. These problems can be overcome by creating other alternatives, one of which is by using biodegradable plastic. Biodegradable plastics are plastics made from natural polymers that are easily degraded by microorganisms. This study aims to examine the effect of the amount of plasticizer on the length of the degradation process and the effect of using microwaves on the length of time for molding biodegradable plastic. This biodegradable plastic is made by combining durian seed starch, shrimp chitosan and plasticizers in the form of glycerol and polyglycerol with volume variations of 1 mL, 2 mL, 3 mL, 4 mL, and 5 mL. This polymerization was carried out using a microwave with a power of 100 watts for 60 minutes. The resulting biodegradable plastics were characterized using the FTIR test, the Mechanical Properties test, the Absorbency test, and the Biodegradation test to determine the quality of the biodegradable plastic. The results of this study indicate the greatest tensile strength value is 1.9768 MPa, the largest elongation value is 21.2772%, the smallest water absorption is 45.40% for 5 minutes, and the largest degraded mass is 0.908 grams for 7 days. Based on this research, it can be concluded that the use of polyglycerol can accelerate the plastic degradation process. In addition, the use of microwaves can speed up the molding time of biodegradable plastics.Keywords: Biodegradable plastic, Durian seed starch, Shrimp chitosan, Glycerol, Microwaves

The effectiveness of argumentation based learning and problem based learning models in improving student’s argumentation skills about salt hydrolysis concept Anisa Puspita Sari; Harizon Harizon; Muhammad Haris Effendi-Hasibuan
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 3 (2021): December
Publisher : Pascasarjana Universitas Negeri Medan

Learning model that can train students in developing their argumentative skills includes the Argumentation Based Learning (ABL) and Problem Based Learning (PBL). This study aimed to see the effectiveness of the ABL and PBL models in improving students' argumentation skills about the concept of salt hydrolysis. The study was conducted in the class XI MIA SMAN 1 Tebo Jambi with a sample consisting of two classes. Some 50 students were recruited purposively to be the participants of this study. Concurrent embedded mix method using two group pretest posttest control group design was used in this study. The results of independent t-test showed that ABL was more effective than PBL (t= 4.864; p-value=0.00 < 0.05) in improving the students' argumentation skills. This was supported by the N-gain test of ABL which was 0.82 and the N -Gain test of PBL was 0.68. The results of observations revealed that the ABL students had more intensive opportunities to debate their argumentation than those in the PBL class. This was believed as the major factor influencing the difference in the students’ argumentation skills. Keywords: argumentation based learning, argumentation skill, problem based learning, salt hydrolysis

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