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Analysis of student scientific literacy using the socio-scientific issues (SSI) approach on reaction rate 用社会科学问题(SSI)方法分析学生科学素养的反应率
Pub Date : 2022-04-30 DOI: 10.24114/jpkim.v14i1.32665
Juli Yani, N. Afrianis
This research at analyzing and knowing student science literacy after using Socio-Scientific Issues (SSI) approach on Reaction Rate lesson at the eleventh grade of MIPA 1 of State Senior High School 4 North Tambusai, Rokan Hulu. This research was conducted in the first semester in the Academic Year of 2019/2020. It was quantitative descriptive research. A purposive sampling technique was used in this research, and the samples were 32 students. The instrument was an essay test and it was supported by an unstructured interview. The data obtained then were analyzed descriptively. The results of analyzing the data showed, based on the data of essay test results, mean percentages of scientific literacy indicators: implementing the appropriate knowledge was 66.01% (good), identifying was 69.21% (good), explaining the implications of scientific knowledge for society was 80.94% (good), proposing ways to investigate scientific questions was 54.68% (enough), and drawing the right conclusion was 75.78% (good). It could be concluded that the achievement of student scientific literacy skills on the aspects of science competencies of Reaction Rate lesson at the eleventh grade of MIPA 1 overall was on good category.
本研究旨在运用社会科学问题(SSI)方法,分析并了解国立高中四所中学一年级学生的科学素养。本研究在2019/2020学年第一学期进行。这是定量描述性研究。本研究采用目的性抽样方法,样本为32名学生。这个工具是一个论文测试,它由一个非结构化的面试来支持。然后对所得数据进行描述性分析。数据分析结果显示,基于论文测试结果的数据,科学素养指标的平均百分比:实施适当的知识为66.01%(良好),识别为69.21%(良好),解释科学知识对社会的影响为80.94%(良好),提出调查科学问题的方法为54.68%(足够),得出正确的结论为75.78%(良好)。结果表明,高二学生科学素养技能在“反应率课”科学能力方面的成就总体上处于良好水平。
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引用次数: 0
Analysis of final semester assessment questions (PAS) in grade XI chemistry online learning based on cognitive domain level of revised Bloom's taxonomy
Pub Date : 2022-04-30 DOI: 10.24114/jpkim.v14i1.30847
Tika Reformatika Fuadi, E. S. Bahriah, S. Agung
This study aims to determine the distribution of cognitive domain levels from Final Semester Assessment (PAS) questions in online learning chemistry grade XI based on the cognitive domain of Revised Bloom's Taxonomy. The method used is descriptive method with the instrument in the form of a check-list format. The object of this research is the question of PAS chemistry grade XI even semester in four schools in South Tangerang City. The data were obtained through analysis of the cognitive domain level of Revised Bloom's Taxonomy on each item and validated through triangulation techniques by two experts in the field of chemistry. The results showed each of the percentages for the C1 domain is 24.3%, the C2 domain is 32.9%, the C3 domain is 32.1%, the C4 domain is 10.7%, and the C5 and C6 domain are both 0%. This show that the distribution of cognitive domains on the chemistry PAS questions for grade XI was not evenly distributed, PAS questions were distributed in four domains out of a total of six cognitive domains, C1, C2, C3, and C4. There are no questions in the cognitive domains of C5 and C6.
所使用的方法是描述性方法,仪器采用核对表格式。本研究的对象是坦格朗市南部四所学校PAS化学11年级连学期的问题。数据是通过分析修订的布鲁姆分类法对每个项目的认知领域水平获得的,并通过三角测量技术由两位化学领域的专家进行验证。结果表明,C1域占24.3%,C2域占32.9%,C3域占32.1%,C4域占10.7%,C5和C6域均为0%。结果表明,高中11年级化学PAS题的认知域分布并不均匀,在6个认知域中,PAS题主要分布在C1、C2、C3和C4 4个认知域。在C5和C6的认知领域没有问题。
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引用次数: 0
Discovery learning model to optimize students’ critical thinking skills on hydrocarbon material 探索学习模式,优化学生对碳氢化合物材料的批判性思维能力
Pub Date : 2021-12-08 DOI: 10.24114/jpkim.v13i3.30208
Tesa Lonika Yuniawati, F. Purba
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.
21世纪的学习需要先进的人类思维,尤其是批判性思维能力。批判性思维技能提高了学习过程,使学习过程更加优化,以学习为核心。本文旨在描述如何使用发现学习模式来优化学生的批判性思维技能。使用的研究方法是描述性定性的。根据研究和各指标的数据,发现使用发现学习模式能够优化学生的批判性思维技能。发现学习模式中的每一步都有助于批判性思维技能指标的实现。
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引用次数: 0
Analysis of online learning based edmodo in pandemic era in atomic structure classes x at senior high school harapan 1 Medan 大流行时代基于edmodo在线学习的高中原子结构x课分析
Pub Date : 2021-12-08 DOI: 10.24114/jpkim.v13i3.29104
H. Nisa, Fathia Namira, Jasmidi Jasmidi, A. Sudrajat, T. Juwitaningsih
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.
自2020年3月中旬以来,印度尼西亚的教育发生了重大变化。在线学习答疑是解决利用网络媒体减少新冠肺炎病例蔓延的病毒问题的方法。Edmodo是一个学习应用程序,该应用程序可以用于粗体学习,包括原子结构材料。本研究分析了基于Edmodo的学习媒体对原子结构材料的理解,以及学生对Edmodo在化学学习特别是原子结构材料中的应用的反应。使用的研究方法是描述性定性的。结果表明,学习的有效性为69%,大流行期间应用的可持续性为76%,可获取性为97%,可沟通性为61%,清晰评价为84%,对材料Edmodo的理解为59%。实施化学学习包括:(1)在分析学生需求、推理和掌握应用的基础上,选择Edmodo作为化学学习的大胆学习媒介;(2)根据学期学习计划,将申请作为学生学习的媒介;(3)根据学期学习计划,基于edmodo的在线学习实施顺利;(4) edmodo作为应用程序可以帮助开展原子结构学科的化学学习,衡量学生的学习成果。因此,可以得出结论,Edmodo是在Covid-19大流行期间使用的实际应用程序。
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引用次数: 0
The effect of colloids practicum e-module to improve students’ interest on virtual lab during the covid-19 pandemic 新型冠状病毒大流行期间胶体实习电子模块提高学生虚拟实验室兴趣的效果
Pub Date : 2021-12-08 DOI: 10.24114/jpkim.v13i3.29016
N. Harefa, Novia Fransisca Dewi Silalahi, L. Purba, Herna Febrianty Sianipar
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.
实践学习是科学特别是化学学习过程中的重要课程之一,实践学习一般在实验室进行。Covid-19大流行导致实际学习活动无法在真正的实验室中进行。这种情况鼓励创建实用的学习创新,即使用虚拟实验室。在本研究中,描述了学生使用虚拟实验室的学习兴趣,并将其与电子模块在胶体材料上的使用相结合。根据数据分析的结果,74.55%的学生对使用虚拟实验室感兴趣,10.90%的学生非常感兴趣,12.73%的学生很感兴趣,1.82%的学生不感兴趣。这些数据表明,大多数学生能够很好地利用虚拟实验室,并能够优化学习过程。然而,虚拟实验室并不是要取代真实的实验室,而是可以作为补充和媒介来支持真实实验室的学习。
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引用次数: 2
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 工业革命4.0时代下,STEM方法电子模块——散养鸡蛋生产率对创业课程学生学习成果的影响
Pub Date : 2021-12-08 DOI: 10.24114/jpkim.v13i3.29931
K. W, M. Sukaryawan, E. Ad’hiya
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.
在斯里维加亚大学化学教育研究项目的创业课程中,以电子模块的形式使用技术是工业革命4.0时代学习的挑战。因此,本研究旨在确定STEM方法电子模块-散养鸡蛋生产率主题对工业革命4.0时代创业课程中学生学习成果的影响。本研究的调查对象是斯里维加亚大学化学教育研究项目第三学期的学生。这种研究方法是一种准实验方法,即对先前开发的电子模块进行有限的现场测试。学生学习成果的数据来自测试前和测试后的分数,并由N-Gain分析。结果显示,N-Gain值为0.937,属于高类别,这意味着学生在使用STEM电子模块方法之前和之后的学习成果存在显著差异。除此之外,受访者还报告了由于在化学教育创业课程中使用STEM方法的电子模块-自由放养鸡蛋生产力主题而在商业计划中产生创造力的例子。因此,我们可以得出结论,在斯里维加亚大学化学教育研究项目的创业课程中,使用STEM方法模块-散养鸡蛋生产率的主题对学生的学习成果有影响。
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引用次数: 0
Natural mouthwash of sarang banua leaves (Clerodendrum fragrans Vent Willd) extractas a healthy solution during the covid-19 pandemic 沙蚕叶(Clerodendrum fragrans Vent wild)提取物的天然漱口水是covid-19大流行期间的健康解决方案
Pub Date : 2021-12-08 DOI: 10.24114/jpkim.v13i3.29077
Julianse Lydia Nababan, Titin Evania Manalu, R. Aulia, Anna Lestari, Angga Koswara Malau, M. Simorangkir
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.
COVID-19病毒的传播震惊了世界。实施清洁健康生活行为(CHLB)是预防新冠病毒传播的最佳措施。保持口腔和牙齿卫生可以改善健康,特别是在COVID-19大流行期间。沙朗是北苏门答腊岛的一种本地植物,含有生物碱、类固醇、黄酮类、三萜、皂苷、单宁、醌等次生代谢产物,具有抗菌、抗氧化等生物活性。以沙蚕叶提取物为原料,以0.5克的浓度配制沙蚕叶漱口水(SABANA),并通过感官、pH值和抗菌试验对其进行了评价。感官和pH值测试结果表明,SABANA漱口水制剂呈棕色,微浑浊,味道非常独特,清新,消除了口臭,pH值为7,符合质量标准。大约70%的小组成员表示,他们非常喜欢SABANA漱口水制剂的颜色、香气、味道和外观。对口腔细菌变形链球菌ATCC(25175)的抑菌试验结果表明,0.5%和0.75%的口腔抗菌漱口水具有口腔抗菌效果,平均抑菌带直径分别为16.55和16.9 mm。通过学生创新创业计划的活动,SABANA漱口水已经通过线上和线下商店在当地和城市以外的地方生产和销售,并有机会发展成为一个新的企业家。
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引用次数: 0
The effectiveness of the four-step jigsaw and jigsaw learning model in improving students' argumentation skills about salt hydrolysis concept 四步拼图及拼图学习模式对提高学生盐水解概念论证能力的有效性
Pub Date : 2021-12-08 DOI: 10.24114/jpkim.v13i3.29929
Windy Kartika, A. Asrial, Muhammad Haris Effendi-hasibuan
One of the learning models that can train students in developing argumentation skills is the jigsaw learning and its modified forms. This study aimed to see the effectiveness of the four-step jigsaw learning and the Jigsaw learning in improving students' argumentation skills about the concept of salt hydrolysis. This study was conducted with 2 classes of 11 grade students of SMAN 7 Kerinci Jambi. Some 53 students in total were purposively recruited and participated in this experiment. Concurrent embedded mixed method with two-group pretest-posttest control group design was used in this study. The results of independent t-test showed that 4SJ was more effective than the Jigsaw class (t= 2.668; p-value = 0.01 < 0.05). It was supported by the n-Gain of 4SJ which was 0.71 and the n-Gain of jigsaw was 0.67. Two factors that influenced the differences in students' argumentation skills were observed; these included the difference in learning duration and the intensiveness in conducting the argumentation debate.
拼图学习及其修正形式是培养学生议论文能力的学习模式之一。本研究旨在观察四步拼图学习和拼图学习在提高学生对盐水解概念的论证能力方面的效果。本研究以SMAN 7 Kerinci Jambi 2个班11年级学生为研究对象。总共有53名学生被有意招募并参与了这个实验。本研究采用并行嵌入式混合方法,采用两组前测后测对照组设计。独立t检验结果显示,4SJ比Jigsaw类更有效(t= 2.668;p值= 0.01 < 0.05)。4SJ的n-Gain为0.71,jigsaw的n-Gain为0.67。影响学生论证能力差异的因素有两个;这包括学习时间的差异和进行辩论的强度。
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引用次数: 0
The implementation of SETS approach towards students achievement on the solubility material based on KKNI 基于KKNI的溶解度材料的SETS方法的实施
Pub Date : 2021-12-08 DOI: 10.24114/jpkim.v13i3.30987
Christina Sitepu, Ruth Mayasari Simanjuntak
The low students’ achievement, lack of variety of teaching methods on Basic Chemistry, lack of students’ engagement on teaching and learning process, misconception of Chemistry is difficult subject, and the changes of curriculum into KKNI on Industrial Revolution 4.0 that demand for the students are on the level 6 on the output based on the government legislation are the problems that need to be done on this study. This study aimed to find out the students’ achievement and response during the learning process on Basic Chemistry-Solubility and Solubility Product-class by using SETS approach based on KKNI. This is a quasi experiemental study through the distance learning. The technique of collecting the data was documentation and research instruments that consist of course outlines (RPS), students’ activity (observation sheet), and students’ work sheets that describe the activity with SETS method, pretest and post test, and the student’s questionnaire. The results showed that the implementation of SETS approach affects the students achievement thus there is enhancement on students achievement for the control and experimental class for 51.92% and the students response on the methods are 88%. The Concluded that there is an effect of Using SETS to improve student achievement and increasing student responses to learning.
学生成绩不高,基础化学教学方法缺乏多样性,学生对教学和学习过程缺乏参与度,对化学是难学科的误解,以及根据政府立法要求学生在输出上处于6级的工业革命4.0课程的KKNI变化是本研究需要解决的问题。本研究旨在利用基于KKNI的SETS方法,了解学生在基础化学-溶解度和溶解度积类学习过程中的成绩和反应。这是一项通过远程学习进行的准实验研究。收集数据的技术是文件和研究工具,包括课程大纲(RPS)、学生活动(观察表)、学生工作表(用set方法描述活动)、前测和后测以及学生问卷。结果表明,set方法的实施对学生的学习成绩有一定的影响,控制班和实验班学生的学习成绩提高了51.92%,学生对方法的反应率为88%。研究结果表明,运用set教学可以提高学生的学习成绩,提高学生的学习反应能力。
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引用次数: 0
Methanol extract from kesambi (Schleichera oleosa (L.) oken) stem bark as a natural antioxidant to increase crude palm oil (CPO) quality 从克山比(Schleichera oleosa (L.) oken)茎皮中提取甲醇提取物,作为天然抗氧化剂提高粗棕榈油(CPO)品质
Pub Date : 2021-12-08 DOI: 10.24114/jpkim.v13i3.29018
W. Musa, Nurhayati Bialangi, Diky Kurniawan, M. A. Sunardi, Ninik Triayu Susparini, Sriwijayanti Sriwijayanti, Boima Situmeang
The content of active compounds in methanol extract of kesambi stem bark (Scheleicera oleosa) is known to have good antioxidant activity. Methanol extract of kesambi stem bark contain flavonoid and fenolic compounds. The purpose of this study was to evaluate the methanol extract of kesambi in inhibiting the oxidation of crude palm oil (CPO). In this study, the extraction of kesambi stem bark was carried out with methanol solvent. Antioxidant activity test of methanol extract of kesambi using the DPPH method. The parameters observed were free fatty acids (FFA) values, acids value, and DOBI (Deterioration of Bleachability Index). The used concentration of natural antioxidant were 200; 400; 600; 800 and 1000 ppm. Based on the results of this study, the natural antioxidant of methanol extract of Kesambi stem bark (Schleichera oleosa) can reduce levels of free fatty acid numbers, acid value, and DOBI value. Actioxidant activity methanol extract of kesambi stem bark shown IC50 42.092 ppm. The lowest FFA levels and acid numbers were obtained from samples with addition of 1000 ppm natural antioxidants with free fatty acid (4.1%), acid value (7.7 mg KOH/g) while the DOBI value increased to 1.331. Furthermore, FFA value meets the CPO quality standard, according to SNI-01-2901-2006.
克山比茎皮甲醇提取物中活性成分含量较高,具有较好的抗氧化活性。克山比树皮甲醇提取物中含有黄酮类化合物和酚类化合物。本研究旨在评价克桑比甲醇提取物对粗棕榈油(CPO)氧化的抑制作用。本研究采用甲醇溶剂提取克山比茎皮。DPPH法测定克山比甲醇提取物的抗氧化活性。观察的参数包括游离脂肪酸(FFA)值、酸值和漂白恶化指数(DOBI)。天然抗氧化剂的使用浓度为200;400;600;800和1000ppm。综上所述,克山比茎皮甲醇提取物具有降低游离脂肪酸数、酸值和DOBI值的作用。克桑皮甲醇提取物活性IC50为42.092 ppm。当天然抗氧化剂添加量为1000 ppm时,游离脂肪酸含量(4.1%)和酸值(7.7 mg KOH/g)最低,DOBI值为1.331。此外,FFA值符合CPO质量标准,根据SNI-01-2901-2006。
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