Jurnal Pendidikan MIPA
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Analyzing Students' Commognitive Processes in Solving Pythagorean Theorem Problems: A Gender-Based
Get PDFThis study describes students' cognitive in solving Pythagorean theorem problems in terms of gender. The research design used is explorative with a qualitative descriptive approach. The research subjects selected were 2 students, namely 1 male student and 1 female student. Data collection was carried out using written assignments and interviews. Checking the quality of the research results using data credibility is done by extending involvement, increasing persistence, discussions with peers, and membercheck and dependability. Data analysis techniques used in this research are data condensation, data display, and conclusion drawing and verification. The results showed that male and female students had raised all commognitive indicators. Male and female students can generally bring up keywords in the form of the words "area of a right triangle 25 ", "perimeter = K", and "hypotenuse c in k". Male students wrote very brief information while female students wrote clear and complete information. The description of the solution written by male and female students is different. The differences found were the use of visual mediators such as visualizing. Male students generalized a as height, b as base, c as hypotenuse while female students generalized a as base, b as height, c as hypotenuse. Endorsed narratives carried out by male and female students can write the formula for the hypotenuse of the Pythagorean theorem, the formula for the area of a right triangle, the formula for the perimeter of a right triangle and the factoring formula. Male and female students can also express the definition of the formula in solving Pythagorean theorem problems. Routines performed by male and female students can choose the right concepts and methods so that they have a good effect on the results of their solutions. Keywords: commognitive, pythagorean theorem, gender. DOI: http://dx.doi.org/10.23960/jpmipa/v25i4.pp1839-185
High School Mathematics Teacher’s Ability in Developing Mathematical Literacy Instrument: A Study in East Lampung Regency
Get PDFHigh School Mathematics Teacher’s Ability in in Developing Instruments of Mathematical Literacy Test: Study in Lampung Timur Regency. This study aims to describe the ability of high school mathematics teachers in East Lampung Regency in developing instruments of mathematical literacy test. This research is a descriptive study with 19 respondents of high school mathematics teachers. The research data were obtained through test, performance test and questionnaires. Data analyzed using data reduction, data presentation and conclusion. The results showed that: a) 63.16% teachers only able to create routine problem which measure employing stage in mathematical process; b) male teachers with more than 25 years teaching experience are only able to develop 5.26% mathematical problems which measure formulating stage; c) Reasoning and argument is the fundamental mathematics skills that was rarely measured in the developed instrument; d) using symbolic, formal and technical language and operations is the most frequently skills that is measured in the developed instrument. Keywords: mathematical literacy instrument, high school teacher, descriptive research. DOI: http://dx.doi.org/10.23960/jpmipa/v21i1.pp35-4
Students Understanding on Decimal Number through Realistic Mathematics Education with Islamic Context at Primary School
Get PDFDecimal numbers are difficult to understand by elementary school students because they consider fractions and decimals as different things. Therefore, learning decimal fractions should be associated with real experiences to make it more meaningful, one of which is through realistic mathematics education (RME) with Islamic context. This study aims to analyze students' understanding and response to RME with Islamic context by using mixed method. The population of this study were fourth grade students in one of the integrated Islamic elementary schools in Banda Aceh, Indonesia. Data collection was done through tests and interviews. The results showed that 75.56% of students had good concept understanding skills. Students experience misconceptions in sorting one-digit and two-digit decimal numbers, even though the teacher has provided illustrations in learning and students also find their own position of one-digit and two-digit decimal numbers on the scale model. Based on interviews, it was found that students were very happy in participating in mathematics learning with an Islamic context because they could get a reward (pahala) while learning mathematics reading the Qur’an and getting new knowledge such as the story of the prophet Syuaib's people, sincerity in giving, and prioritizing honesty in trading. Keywords: concept understanding ability, realistic mathematics education, Islamic context, decimal numbers
Implementation of Treffinger Model assisted by Color Card Media to Enhance Students’ Mathematical Creativity Skills
Get PDFThis study aimed to find out the increase in students' creativity by using the Treffinger model assisted by color card media. This research used Class Action Research. The subject of the research was the VIII.3 grade students of Junior high school 1 Parepare. The data was collected using observation and tests. The research instrument was student activity observation sheets and test sheets for cycles 1 and 2. The data collected were analyzed by descriptive statistics technique. The result of the study showed that the implementation of the Treffinger model assisted by color card media can increase the mathematical creativity of the VIII.3 grade students of junior high school 1 Parepare. It can be indicated by the increase in the activity percentage with an average of 24.74% by cycle 1 was in the “fair” category (55.21%) to cycle 2 was in the “good” category (79.95%), and the increase of the achievement test was 24.53%. Keywords: color card, creativity, mathematics, Treffinger learning model. DOI: http://dx.doi.org/10.23960/jpmipa/v23i3.pp804-81
Effectiveness of Interactive Learning and Discovery Learning Models on Student Learning Outcomes and Activities in Environmental Change
Get PDFThis study aims to determine the differences in student learning activities and outcomes in environmental change materials using interactive learning and discovery learning models. The research method used was a quasi-experimental research with a pretest posttest non-equivalent control group design. Retrieval of data using cluster random sampling method. The total sample of 64 students came from class X IPA 3 which applied the interactive learning model and class X IPA 4 which applied the discovery learning model. The results showed that there were differences in student learning activities in the two classes. Information was obtained in the interactive learning class that the learning activity criteria were very good in all aspects observed, while in the discovery learning class there was one aspect that had very good criteria and five other aspects had good criteria. Based on the results of the analysis N-Gain shows that there are differences in student learning outcomes for the two classes observed. In the interactive learning class the N-Gain value reaches 0.70 (high category) in the discovery learning class reaches 0.46 (medium category).Keywords: interactive learning, discovery learning, learning activities, and learning outcomes.DOI: http://dx.doi.org/10.23960/jpmipa/v24i1.pp39-4
Improving Students’ Problem Solving Skills and Laboratory Performance by Sublimation Apparatus Modification Project
Get PDFThis study aims to develop a sublimation tool to improve problem solving skills and performance in the laboratory. The research method used is the Research and Development (R&D) method with a 4D model. The research sample consisted of control and experimental classes. The sampling technique used was purposive sampling. The results showed that the developed sublimation tool stated: (1) effective for use, it was obtained (1.64). In addition, the results of the development are also good in improving students' problem solving skills with n gain (0.64) with high criteria (2) the results of responses from students' responses to the attractiveness aspect (100%), readability aspect (96.29%), and tool design (100%). Based on the results of research and development, it can be stated that the developed sublimation tool is effective for improving problem solving skills and performance in the laboratory and can be used in practical experiments in studying the material for separating mixtures with sublimation techniques. Keywords: development, sublimation, problem solving. DOI: http://dx.doi.org/10.23960/jpmipa/v23i3.pp872-88
Perception and Motivation of Prospective Chemistry Teachers in Online Learning during COVID-19 Pandemic: A Case of Lampung University
Get PDFThe importance of this research is to get to know the students’ perceptions and motivation of the prospective chemistry teachers in facing online learning during the Covid-19 pandemic. The research design used was descriptive qualitative research. The research was conducted on students of the Chemistry Education Study Program FKIP University of Lampung in 2017, 2018, and 2019. Data collection was carried out by using a questionnaire by means of google form and learning record data in the online data-log mode edusmart.fkip.unila.ac.id. and vclass.unila.ac.id. The results indicated that (1) the interaction pattern between the lecturers and students was quite good in terms of giving assignments and discussions. In terms of feedback and learning reflection, it, however, needs to be improved (2) Students' perception of online learning is less positive, this is indicated by the number of students who are disappointed because of learning methods un-interactive, (3) students are still not motivated yet to take online lectures due to limitation of internet signals and seem to consider it as assignments only. Keywords: COVID-19 pandemic, online learning, motivation, perception. DOI: http://dx.doi.org/10.23960/jpmipa/v22i1.pp77-8
The Development of Test Instrument on The Excretion System to Measure Creative Thinking Skills
Get PDFThe creative thinking ability test instrument is a form tool to measure student creative thinking skills. This study aims to develop a creative thinking ability test instrument and determine is validity level. The research method used in developing the test instrument is the Borg and Gall development method (1983). The research instrument used in this study was a validation sheet. The results of this study indicate that the research and development process carried out by the researchers is a potential problem, data collection, planning, product design development, design validation, and design revision. The validity level of the creative thinking ability test instrument on the concept of the human excretion system that the researcher developed was in the valid category with a value of 76.94%. The test instrument for the ability to think creatively on the concept of the human excretion system is valid for use in student trials. Keywords: Test instrument, creative thinking, excretion system DOI: http://dx.doi.org/10.23960/jpmipa/v22i1.pp10-2
The Socioscientific Issues Approach in Chemistry Education: A Literature Study and Its Implication
Get PDFChemistry is often regarded as an unpopular subject among students, primarily because its learning process often disregards its relevance to students' everyday lives. Integrating socio-scientific issues (SSI) into chemistry education can bridge this gap by connecting chemistry concepts to students' real-life social experiences. Socio-scientific issues are socially relevant problems grounded in science that are inherently complex due to their intersection with multiple social factors, societal impacts, and the ethical dilemmas they often present. This study aims to explore the relationship between SSI-based chemistry learning, the relevance of chemistry education, students' social lives, and its benefits for students' learning. The research employs a Systematic Literature Review approach by analyzing 15 relevant articles retrieved from the ERIC and Scopus databases, selected based on established criteria and published within the last eight years. The findings from the reviewed literature indicate that incorporating SSI into chemistry education can enhance students' interest and motivation, improve their critical thinking and argumentation skills, and support their decision-making abilities. Keywords: socioscientific issues, chemistry learning, and relevance model.DOI: http://dx.doi.org/10.23960/jpmipa/v25i4.pp1880-189
Predict-Observe-Explain Strategy: Effects on Students’ Achievement and Attitude towards Physics
Get PDFThis study employed a quasi-experimental research using the pretest-posttest design to determine the effect of Predict-Observe-Explain (POE) Strategy on students‟ achievement and attitude towards physics. A total of fifty-nine grade seven students from two intact heterogeneous classes participated in this study. The engage-explore-explain-elaborate-evaluate (5E‟s) learning cycle was utilized in teaching the control group while the POE strategy was utilized in teaching the experimental group. T-test was used in determining the significant differences between the two groups and within each group in terms of achievement and attitude. The findings of the study showed a significant difference (p = 0.00) in the achievement scores of the two groups in the posttest. It was further revealed that the experimental group (m = 11.47) performed better in the posttest than the control group (m = 8.86), and registered a significant change in attitude towards physics (p = 0.00) from neutral (m = 3.38) to positive (m = 3.76), while the control group maintained a neutral attitude. This suggests that the POE strategy positively influenced the academic performance and attitude of the students towards physics. Keywords: predict-observe-explain, 5E‟s learning cycle, attitude towards physics, students‟ achievement. DOI: http://dx.doi.org/10.23960/jpmipa/v21i1.pp78-9