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The purpose of this study is to describe the results of the analysis of improving students' mathematical communication skills with Realistic Mathematics Education approach. The type of this research is descriptive qualitative research using the library research method. The subject of this research is the most published articles in published journals about mathematical communication skills through Realistic Mathematics Education approach to junior high school students. Based on the findings from 5 journals, it was found that students' mathematical communication improved better in students who studied with Realistic Mathematics Education approach compared to students who studied with conventional learning. Realistic Mathematics Education approach can improve students' ability to describe, understand, and represent mathematical ideas contained in pictures, tables or diagrams. So, Realistic Mathematics Education approach is one approach that can improve students' mathematical communication skills at the junior high school level with effect size score of 1,158 in the large effect category.

The research method used in this study is the research and development method or also called Research and Development. The research design that will be developed in this study uses the development model presented by Borgan Gall. The product produced in this study is an Arduino Nano-Based Distance Measuring Tool with a Display on the LCD on the Flat Side Room Building Material for Class VIII at SMP Negeri 5 Sepauk. The test subjects of this study included two subjects. The first subject is the validator and the second is class VIII students of SMP Negeri 5 Sepauk. The analysis technique used is to determine the effectiveness, practicality, and validity. The percentage of effectiveness from the average of the two analyzes obtained a percentage value of 94.06% with Very Effective criteria used in learning mathematics. The results of the combined teacher and student response questionnaires - the average percentage obtained was 89.55% with very practical criteria. The combined results of the average percentage obtained from the percentage of experts and the results of the measurement trials obtained a percentage of 76,36% with very valid criteria.    

This study aims to improve students' mathematical problem-solving skills through the Missouri Mathematics Project (MMP) model on the material of a Linear Two Variable System in grade VIII-6 students of SMP N 4 Medan as a subject or this research. The type of this research is classroom action research. The instrument used the collect the data are essay test and observation sheet. Before giving the action in initial test to 32 students obtained the average score is 50.46 with the classical completeness is 34.37% or only 11 students achieve the completeness criteria. The completeness criteria is the standard point that must be reached by students namely at least 65 and classical completeness is the standard percentage that must be reached by the class namely at least 85%. After given the action in the first cycle namely the implementation of MMP learning model to 32 students, obtained the average score is 63.9844 with the classical completeness 50% or 16 students achieve the completeness criteria. Then given the second cycle namely increasing MMP learning model, obtained the average score is 82.11 with the classical completeness 93.75%. Based on the observation done by teacher obtained that the point of second cycle is higher than the point of first cycle. Based on the average gain score, obtained that the average gain score in Cycle I test-Cycle II test is higher than Initial Test-Cycle I Test. From the result of research, can be concluded that the mathematical problem-solving ability of students can be increased or improved especially on the topic of Linear System with Two Variable by using Missouri Mathematics Project Learning Model

This study aims to analyze the initial needs of learning strategies in increasing motivation and learning outcomes of Mathematics for class V Elementary School (SD). The method used in this study is a qualitative descriptive method with research instruments in the form of observation, questionnaires, interviews, and assessment document analysis. The data analysis technique used includes three stages, namely data reduction, data presentation, and drawing conclusions. Based on the results of the initial instrument data analysis, it was found that the motivation and learning outcomes of the fifth grade students at SD Negeri Songgom 01, SD Negeri Songgom 02, SD Negeri Songgom 04 and SD Negeri Songgom 05 in learning mathematics were still low. The average value of student learning motivation is only 62 with the highest score being 82 and the lowest score being 50. While the average score of student learning outcomes is 66.7 in the low category while the highest score is 85 and the lowest score is 45. Low motivation and student learning outcomes are caused by the condition of the learning environment that is not conducive, lack of facilities and infrastructure, lack of support from parents, and the difficulty of using appropriate learning strategies in learning. This research can be used as an initial analysis of the need for appropriate learning strategies in Mathematics learning materials so that students' motivation and learning outcomes can increase.

This research aims to describe the analysis result of the use of learning media in the Problem Based Learning model. The methods used in this research is literature study of 6 sources consists of 3 thesis and 3 journals discuss the use of learning media in the Problem Based Learning model in Indonesia published in the span of 2016-2022. From the calculation of the effect size, the average value is 0.79 which is categorized in the medium category. This shows that the use of learning media with Problem Based Learning in mathematics learning had a positive effect on improving the mathematical ability of students and the effect obtained is in the medium category. The mathematical ability could be improved based on the literature study such as student’s mathematical connection ability, student’s mathematical problem soving ability dan student’s mathematical numeracy literacy ability. The type of learning media according this research are animation, geogebra, microsoft power point, fun math book, cabri 3D v2 dan youtube. Hope for further research can be analyzed more deeply by using more sources so the result will be more maximal and varied.

This study aims to determine : (1) The effect size of using mathematic learning media to students’ mathematical abilities as a whole, (2) The effect size of using mathematics learning media to students’ mathematical abilities based on level of education, (3) The effect size of using mathematics learning media to students’ mathematical abilities based on learning media used, (4) The effect size of using mathematics learning media to students’ mathematical abilities based on subject matter, (5) The effect size of using mathematics instructional media to students’ mathematical abilities based on quantified mathematical ablility. This research used meta analysis method. The sampling technique used purposive sampling and obtained 17 research that fit the criteria. Data collection techniques used documentation with the support of software publish or perish. The results of data analysis showed that : (1) Overall using the learning media has a large effect to students’ mathematical abilities as a proportion 0,972, (2) Based on level of education, the use of learning media has a largest effect size if applied at SMP/MTs as a proportion 1,039 (n=16, SD=0,754), (3) Based on learning media used, the visual media has a largest effect size to students’ mathematical abilities as a proportion 1,003 (n=13, SD=0,641), (4) Based on material that is taught, the use of learning media on a branch of logic material has a largest effect size to matematical abilities as a proportion 1,237 (n=2, SD=0,489), (5) Based on quantified mathematical abilities, the use of learning media has a largest effect size to students’ reasoning abilities as a proportion 1,303 (n=3, SD=0,353).

This study aims to obtain teaching materials based on a valid, practical, and effective realistic mathematical approach, so as to improve students' mathematical reasoning abilities on the material of a three-variable linear equation system. The research instruments used were questionnaire validation sheets, lesson plans validation sheets, teaching material validation sheets, test instrument validation sheets, mathematical reasoning ability tests, and teacher and student response questionnaires to teaching materials. After all instruments, lesson plans, and teaching materials were declared valid by the validator, then readability tests and field trials were carried out. The results showed that: (1) the teaching materials based on the realistic mathematical approach developed had met the criteria of validity based on the validator's assessment with the average validity of the teaching materials for the material being 3.13 and 3.29 for media with a very feasible category; (2) the teaching materials based on the realistic mathematical approach that have been developed have met the practicality criteria through: a) the results of the questionnaire student responses to teaching materials show the percentage of practicality of 81.19% with a very practical category, b) the results of the questionnaire responses of teachers to teaching materials show the percentage of practicality 88.75% with very practical category; (3) The teaching materials based on the realistic mathematics approach developed meet the effective criteria with: a) classical student learning mastery of 88%, b) more than 65% of students have achieved 75% of learning objectives for each indicator, c) increased mathematical reasoning ability students after using teaching materials seen through the average score of students increased from 50 in the pretest to 85.33 in the posttest and the results of the N-Gain analysis which showed students' mathematical problem solving abilities increased by 0.712, meaning in the high category.

This study aims to find out that studying literature can effectively improve students' mathematics learning achievement with the STAD type cooperative learning model.  The type of research used is research with a qualitative approach.  Qualitative research uses descriptive or verbal data from people who have observed a behavior.  The method used is literature study.  Literature study is an activity that is closely related to the method of collecting library data, reading and taking notes as well as processing research materials.  The type of data used is secondary data.  Secondary data is data that already exists, so we just need to find and collect existing data.  The secondary data source used in this research is student learning outcomes with the STAD type cooperative learning model.  From the search results, the researchers found 7 journals relevant to the research topic.  From the journal it was found that there was an increase in student learning outcomes using the STAD type cooperative learning model.

This research aims to find out the results of research analysis of students abilities through the Two Stay Two Stray (TSTS) type cooperative learning model from various literature, as well as to analyze the difficulties of students mathematical communication skills through the Two Stay Two Stray model. This type of research is descriptive qualitative and uses a literature study research method which was carried out at the Digital Library, Medan State University in July – September 2022. The instrument in this study was the author himself. The steps of this research are: (1) Designing the research. (2) Carry out the research design. (3) Analyze and provide conclusions on the results of the analysis. The analysis technique used in the selection of information related to data analysis techniques is the Miles and Huberman analysis technique. The data source used secondary data consisting of 5 journals. The conclusions of the results of this study show that: (1) The average results of tests of students mathematical communication abilities through the application of the TSTS model are: (a) The indicator of mathematical representation is 51.93%, (b) The indicator of writing/explaining mathematics was 40.31%, (c) The indicators describe is 37.94%. (2) There are several difficulties experienced by students and teachers are: (a) Students have difficulty connecting real objects, pictures, and diagrams into mathematical models, (b) Students lack confidence in communicating arguments and ideas in mathematical problems, ( c) Students are less thorough in working on questions, (d) Students have difficulty expressing mathematical ideas in the form of graphs, pictures, or tables, (e) Low student skills in understanding mathematical communication problems and drawing conclusions about mathematical communication problems, (f ) The role of the teacher is less than optimal in carrying out learning activities.

The background of this research was class VIII MTs Al Washliyah Sei Mencirim  with learning difficulties in following the teaching of mathematics with a scientific approach introduced by Kemendikbud in Curriculum 2013. Such problems made researchers interested in conducting further research. The purpose of this study to determined the cause of students experiencing difficulties in the learning process of mathematics with a scientific approach. This research was a quantitative and qualitative research. Data obtained by observation, questionnaires, and interviews. The research instrument used was a questionnaire teachers and students, learning and activity observation sheet of students in the classroom, as well as interview guides teachers and students. The results showed that the form of learning difficulties for class VIII students that appeared in mathematics learning on flat sided space material with a scientific approach were students having difficulty understanding and solving flat sided space problems, difficulty in asking flat sided shape problems, difficulty in trying to solve problems. in the form of reasoning and difficulties in concluding the material that has been studied. The cause of the emergence of learning difficulties in mathematics learning material relations and presenting the relation with the approach of scientific because of the difficulties caused by teachers such as: (1) the teacher wasn’t directing students to ask and concluded, (2) teachers didn’t prepare the implementation stages observe well with the acquisition of a percentage 40%, (3) the issue of the reasoning given fairly difficult, (4) lack of skills and understanding of teachers in implementing the learning process with the approach of the scientific with the acquisition of a percentage of 40% and the difficulties that arise from the students themselves, such as: (1) lack of awareness of students to learn and willing to follow the learning process, (2) the fear that a dominant appears, (3) students experience language impairments, (4) students impaired recall, (5) students impaired reasoning.

This study examined the average student mathematics learning outcomes when the Blended Learning Model was applied to learning integer material. The study design used was: Posttest Only Control Group Design. The population in this study was all of class VII at SMP Negeri 6 Tondano. In contrast, the samples in this study were class VII B, with 21 students as the experimental class and class VII A as the control class with 21 students. This study's analysis showed that the experimental class's average posttest score was 84,76, while the average posttest score for the control class was 74,28. The study results were analyzed using the T-test statistic at s significant level of 0,05, namely Tcount = 3,636 > Ttable = 1,725, so that H0 was rejected and H1 was accepted. The Blended Learning Model can improve student learning outcomes based on these results.

Mathematics is often seen as a deductive science and is not related to social aspects. Even though mathematics grows and develops from socio-cultural practices that occur in society. This is the basis for the development of ethnomathematics concepts. The ethnomathematics concepts in the Bolaang Mongondow community are very diverse. This study aims to describe the implementation of ethnomathematics in learning mathematics at SMP Negeri 7 Kotamobagu, especially in the use of regional languages ​​and symbols of the Bolaang Mongondow Kabela Box Craft. The data obtained is in the form of qualitative data while the sources are obtained from interviews, observation, and documentation from informants (teachers, students and craftsmen). The main instrument is the researcher, while the supporting instruments used are interview guides and documentation. The results showed that the regional language and the symbols of the Bolaang Mongondow Kabela Box craft really helped teachers and students in the process of learning mathematics at SMP Negeri 7 Kotamobagu.

This research aims to improve student learning outcomes in class I at SD Cordova Indonesia through the application of the trade a problem learning model assisted by concrete media. The problem in this research is the low mathematics ability of students in class I at SD Cordova Indonesia. The method used in this research is the classroom action research method (PTK). The subjects in this research were all 27 class I students at SD Cordova Indonesia. The indicator of success in implementing the action is that students achieve a minimum of 70% completeness with an average learning outcome score of at least 70 from the total number of students. Based on data processing from research results, the average value of student learning outcomes in the pre-cycle was 54.44, then after the first cycle actions were carried out it increased to 63.70. The first cycle action was then continued to the second cycle action and obtained an average score of 71.85 with student completion reaching 74.10% of the total students who took the learning outcomes test. Based on the results in cycle II, it shows that the application of the trade a problem learning model assisted by concrete media is effective in improving students' mathematics learning outcomes in class I at SD Cordova Indonesia.

This study aims to see and find out whether there is a relationship between the ability to learn mathematics and the results of learning physics online. Physics is a branch of science that studies the behavior of nature through experimental observations and quantitative measurements. In studying nature, Physics uses the language of mathematics to model natural phenomena in mathematical equations. In studying Physics, it is necessary to be able to The research method used is descriptive correlation analysis. The sample of this study was 60 students for three different classes. The research instrument is a report on student learning outcomes or a list of odd semester report cards for the 2020/2021 school year. The results of data analysis show that there is a significant relationship between mathematics learning ability and online physics learning outcomes with a large correlation coefficient (r) of 0.787 For class X-1, the value of the correlation coefficient is r = 0.734 for class X-2 and r = 0.661 For class X-3. This shows that if the ability to learn mathematics is high, the learning outcomes of physics will be high as well.

One of the most important problems to be addressed is the low achievement of students in mathematics. This needs to be addressed immediately considering that mathematics is the science most often used in the world of work. The purpose of this study was to determine the effectiveness of additional hours of mathematics lessons on improving mathematics learning achievement of class XII MIPA students. This research is categorized as evaluation research using the CIPP model (context, input, process, and product). The population studied was all students of class XII MIPA MAN 3 Bantul in the 2016/2017 academic year, totaling 64 people. The condition before the learning process was carried out with the addition of study hours obtained an average value of 34.10 while after the addition of hours the acquisition increased to 44.16 or an increase of 29.50%. The results of the t-test analysis showed that there were significant differences in the results of learning mathematics before additional hours were added.

Rapid technological advances make print communication media begin to be shifted by information media that utilizes computer technology as a means of delivery. Technological developments change the teacher's task from being a teacher to a facilitator who provides convenience in learning. SD Negeri 004 Bangsal Aceh is one of the schools that still applies the mathematics learning process using textbooks so that students do not understand the lesson. Teachers are required to make changes in teaching patterns in the classroom, one of which is with animated videos. This study uses the Multimedia Development Life Cycle (MDLC) method covering concept, design, collecting material, assembly, testing and distribution. The final result of this research is an animated video of mathematics learning about the material of flat shapes. Animated videos are used as an interesting and effective means of information and learning media. Besides that, it can also improve students' understanding and skills in learning mathematics, especially the material of flat shapes

Mathematics is an applicable science and very close to human life, so mathematics is very important to learn from elementary school. However, the mathematics competence of elementary school students in Indonesia is relatively low. One of them is SD IT Cahaya Ummat which is located in Karangjati, Kecamatan Bergas, Kabupaten Semarang, the grade 6 students' average mathematics score is lower than other subjects. So far, learning is still conventional in nature with learning resources in the form of printed books, thus it is necessary to have learning innovations to increase students' interest in learning mathematics.The design of interactive media as a learning aid can be a solution to attract students' attention to be more focused when the teacher explains math material in class. When students feel interested and focused on learning, learning will be more effective so that students' understanding of the material presented by the teacher will also increase.Interactive learning media made with Adobe Flash CS5.5 to combine text, images, sound, and animation will make the application more attractive, so that students are more interested in learning mathematics with statistics material. The results of the validation score obtained from media experts are 34, material experts 39, and users 35, so this learning media product is classified as a very good category, so it is valid to be used.  

The purpose of this study was to analyze the effect of learning creativity and emotional intelligence on economic mathematics learning achievement of students at Stie Ganesah Jakarta. This research is a quantitative survey research with a correlation approach. The respondents in this study were first semester students of the STIE Ganesha Economics study program. The data were obtained by giving the students' learning creativity and emotional intelligence questionnaires. This is evidenced by the value of Sig = 0.011 <0.05 and t count = 2.696. The magnitude of the correlation number is 0.389 with a determination of 0.151. This means that the magnitude of the relationship between X1 and X2 variables to Y is 0.389 with a medium category. The magnitude of the effect of X1, X2 on Y is 15.1% where the variables of learning creativity and emotional intelligence together affect the variable of student achievement in mathematics economics by 15.1% while the rest is influenced by other variables.