International Journal of Trends in Mathematics Education Research
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Mathematical problem-solving ability of junior high school students
Get PDFMathematical problem solving is the process of using students' knowledge to find solutions to problems. Students are This study aims to describe the ability of mathematical problem solving in circle content. This research focuses on solving problems based on 4 stages of Polya, namely the ability to solve problems, organize, plan, and check results. This research uses descriptive qualitative method. The research subjects were 6th grade students of SMPN 1 Meureudu as many as 6 people. The selection of subjects was done by purposive sampling with the criteria that students who were recommended by mathematics’ teachers based on the best grades and had participated in at least one Math Olympiad. The research instrument used mathematical problem-solving tests and interviews. Data analysis technique is done by analyzing student work data, interpreting, and concluding. The results of data analysis showed that students' mathematical problem-solving abilities were still low. The low problem-solving ability is seen based on indicators of problem-solving ability that cannot be achieved by most student
Development of guided inquiry model mathematics learning tools to practice critical thinking skills for students in linear program materials
Get PDFThis study aims to describe the process of developing the device and producing a good quality guided inquiry model mathematics learning tool on linear program material for class XI SMA, and to describe the effectiveness of guided inquiry model mathematics learning which can train students' critical thinking skills on linear program material. This type of research is development research (RnD). The learning tools developed in this study are the Learning Implementation Plan (RPP), Students Worksheet (LKPD), and Critical Thinking Ability Test (TKBK) are developed using a 4-D development model which consists of four stages, namely the define stage, the design stage, the develop stage, and the disseminate stage. The research subjects for the trial class were 13 students of class XI MIPA 3 and the research subjects for the implementation class were 17 students of class XI MIPA 1. Based on the results of descriptive analysis, it was found that the learning tools developed were of good quality because they met valid, practical, and effective criteria. The learning device is said to be valid because all validators give a minimum score of 3 for each aspect of the assessment on a scale of 1-4 and the critical thinking ability test questions meet the valid, reliable, and sensitive criteria. The learning device is said to be practical because the teacher's activities in managing learning meet good criteria and the activities of students meet the active criteria. Learning devices are said to be effective because students 'responses to learning devices and learning activities meet the positive category, guided inquiry mathematics learning model to train students' critical thinking skills is achieved
Trend of critical thinking skill studies in mathematics education: A study design to data analysis
Get PDFThe aim of this study was focuses on the analysis of international publications related to critical thinking skills in education including the number of publications and how they trend, the distribution of study countries, study types, study subjects, critical thinking linkages that arise from published publications. analyzed, data collection instruments, data analysis and results of study on these publications. the most distribution of data related to critical thinking skills in 2021 with the distribution of countries namely Indonesia, USA, Iran, Malaysia, Turkey, UAE and the most publications obtained by Indonesia. The most common type of study is qualitative study, followed by quantitative study and then study and development. The study subjects used in the article are quite spread out from early childhood, elementary school students, junior high school students, high school students, university students, teachers to the books used. Most of the study trends discussed here relate to teacher pedagogical competence, problem solving, achievement, creative thinking, peer shared intervention and communication skills as a form of cooperation in 21st century skills. Test instruments are used the most, then questionnaires, interviews, continued questionnaire and observation guide, systematic literature review and finally book scoring. data analysis using percentage is the most, data analysis with descriptions then t test and ANOVA
Improvement of student's mathematical understanding ability through problem based learning
Get PDFThe understanding mathematics ability is important for high school students. However, the reality that happened at SMAN 6 Banda Aceh, students' mathematical understanding still has not reached completeness so that it affects the final score of mathematics subjects. The cause of the problem is due to teacher-centered learning which makes learning meaningless. Therefore, a meaningful learning model is needed so that it can improve students' mathematical understanding ability. One of the meaningful learning models is the Problem Based Learning model. Based on this background, this research aims to:to find out the increase in students' mathematical understanding skills with the Problem Based Learning modelat SMAN 6Banda Aceh. This research is a quasi-experimental design with nonequivalent control group design. The research sample consisted of two classes, namely class XI IPA-2 as the experimental class consisting of 30 students with the PBL model and class XI IPA-1 as the control class consisting of 29 students with the conventional model. The data collection technique is done by test. The research instrument used is a test of mathematical understanding ability. The data analysis technique used independent sample t-test. The results showed that the value of sig. count more than sig. alpha, so it can be concluded that the increase in students' mathematical understanding through the PBL model is better than the mathematical understanding of students who get conventional learning
Forecasting COVID-19 cases for Top-3 countries of Southeast Asian Nation
Get PDFSeveral countries continue controlling the spread of the corona virus to decrease the number of new COVID-19 cases. Currently some Southeast Asian countries require an estimate of the num-ber of daily new COVID-19 cases of in the future in order to reopen or consider lifting strict pre-vention policies. This study applies ARIMA and SARIMA forecasting models to predict the de-cline in the number of new cases in three Southeast Asian countries. The first modelling is carried out using the ARIMA model with optimized model parameters based on the Akaike Information Criterion (AIC) and Bayesian Information Criterion (BIC) analysis. Then, the Mean Absolute Error (MAE), Root Mean Square Error (RMSE) and Mean Absolute Percent Error (MAPE) are evaluated is applied a criterion to select the best model. The best ARIMA and SARIMA models are selected manually and they are used to predict the number of new cases in three Southeast Asian coun-tries. It is expected that the number of new cases in these countries will experience a significant decline in the next month from September 2021. The prediction of SARIMA model indicates a better result than the ARIMA model which confirms the existence of a season in COVID-19 data
Students creative thinking skills on differentiated instruction
Get PDFCreative thinking is one of the skills that must be possessed by students in the 21st century. This study aims to investigate and describe students' creative thinking skills in completing the Cartesian Coordinate Skills Task (CCST). This research was conducted in one of the public junior high schools in Jambi City. The research subjects were six 8th grade junior high school students who have learnt by product differentiate instruction. The research subjects were divided into 3 categories based on the results of the Knowledge Question (KQ), namely high, medium, and low. Students' creative thinking skills were tested through CCST and the results were analyzed based on creative thinking indicators. The results of this study indicate that each subject tends to be able to show aspects of fluency and flexibility, but only three subjects are able to show aspects of novelty. In addition, from the three subjects, there is 1 subject in the low category who is able to show the novelty aspect
The effect of online games on students’ mathematics learning outcomes at SMPN 1 Sintuk Toboh Gadang
Get PDFThe purpose of this study was to see the significant effect of online games on students' mathematics learning outcomes at SMP N 1 Sintuk Toboh Gadang. The approach used in this study is a quantitative approach with the type of correlational research, namely research conducted between two or more variables that aims to find out whether there is a relationship and if there is, how close the relationship is and whether or not the relationship is meaningful. The instrument used in this study was a questionnaire or questionnaire and learning outcomes test used to determine the effect of online games on students' mathematics learning outcomes. The analysis used in this study was simple linear regression analysis. The results showed that: 1. The mathematics learning outcomes of grade VIII SMPN 1 Sintuk Toboh Gadang students who liked to play online games varied widely 2. There was an influence between playing online games on the mathematics learning outcomes of eighth grade students of SMPN 1 Sintuk Toboh Gadang, which was indicated by F count = 47, 85 F table = 4.6 this can also be seen from the regression coefficient value of -0.882. The simple linear regression equation obtained is Y = 184.41-0.6X where Y is the result of learning mathematics and X is the online games variable. The conclusion is that there is a negative effect of online games on students' mathematics learning outcomes in class VIII SMPN 1 Sintuk Toboh Gadang, both up and down and all independent variables (X) have an effect on the dependent variable (Y) of 77.7%
Star metric dimension of complete, bipartite, complete bipartite and fan graphs
Get PDFOne of the topics in graph theory that is interesting and developed continuously is metric dimension. It has some new variation concepts, such as star metric dimension. The order set of Z={z1,z2,…,zn }⊆V(G) called star resolving set of connected graph G if Z is Star Graph and for every vertex in G has different representation to the set Z. The representation is expressed as the distance d(u,z), it is the shortest path from vertex u to z for every u,z∈V(G). Star basis of a graph is the smallest cardinality of star resolving set. The number of vertex in star basis is called star metric dimension of G which denoted by Sdim(G). The purpose of this article is to determine the characteristic of star metric dimension and the value of star metric dimension of some classes of graphs. The method which is used in this study is library research. Some of the results of this research are complete graph has Sdim(Kn )=n-1, for n≥3, bipartite graph K(2,n) has Sdim (K(2,n) )=n, for n≥3. Besides complete bipartite graph hasn’t star metric dimension or for m,n≥3 or it can said that Sdim (K(m,n) )=0. Another graph, that is Fan graph has Sdim (Fn )=2 for 2≤n≤5 and for n≥6 Sdim (Fn )=(2n+3)/5.
Augmented reality-based flat-sided building cards to improve students' understanding of mathematical concepts
Get PDFThis study aims to improve students' understanding of mathematical concepts by applying augmented reality-based flat-sided wake-up cards media at SMP 10 Sungai Kakap. Experimental research with a quantitative approach was chosen as the method in this study. The instrument used was a description test in the form of pre-test and post-test with a population of 8th graders at SMP 10 Sungai Kakap, Kabupaten Kubu Raya, West Kalimantan which consisted of 2 classes. The research subjects were students of grade 8 B which consisted of 30 students who were selected by cluster random sampling. The data were analyzed using the paired data class t-test. The results showed that students' understanding of mathematical concepts increased after applying mathematics learning using augmented reality-based flat space card media
Development of video learning media assisted by Sparkol Videoscribe to facilitate the ability to understand mathematical concepts of students
Get PDFThis study aimed to develop and produce video learning media assisted by Sparkol Videoscribe that are valid, practical, and able to facilitate understanding of mathematical concepts. This type of research is development research using the ADDIE model which includes five steps, namely: analysis, design, development, implementation, and evaluation (evaluation).This study was conducted at the Junior High School (SMP) Islam Terpadu Abdurrab Pekanbaru. The subjects of this study are learning materials experts and educational technology experts, as well as VIII grade students of Junior High School (SMP) Islam Terpadu Abdurrab Pekanbaru and the object of this study is video learning media assisted by Sparkol Videoscribe. Data collection techniques include questionnaires and concept understanding ability tests. The data analysis technique used is the descriptive data analysis technique. Based on the results of validation by a team of validators consisting of 2 learning material experts and 3 Education technology experts. The validation results from the learning material expert validators show that the resulting learning videos have very valid criteria with a percentage level of validity of 98%, and the assessment of educational technology experts has very valid criteria with a validity percentage of 84%. Then the results of the practicality test that was tested on VIII grade students of SMP Islam Terpadu Abdurrab were grouped into two groups, namely a small group with a total of 8 students respondents obtaining a score of 86.9% with a very practical category, and a limited group with a total of 34 students receiving a score of 85, 73% with very practical category. Furthermore, from the posttest results, the male class got an average score of 86.38% with high criteria, and the female class got a score of 90.5% with high criteria. Next, a t-test was conducted on the posttest results for male and female classes, with the results tcount (-1.444) ttable(1.694), with the conclusion that there was no significant difference between male and female classes