Student’s mathematical connection ability through GeoGebra assisted project-based learning model

Several previous studies related to mathematical connection abilities and GeoGebra-assisted project-based learning models, but this research focuses on improving students' mathematical connection ability in the Integral Calculus course. This study examines the improvement of mathematical connection abilities through a project-based learning model assisted by GeoGebra. The research method used was a quasi-experimental design with a pretest-posttest nonequivalent multiple group design. The population is students of the Mathematics Education Study Program at the University in West Java, Indonesia. 1A and 1B students, which are used as samples. The technique of taking the research subject uses purposive sampling. The instrument consisted of a mathematical connection ability test with three essay questions. The test in this study used a pretest and posttest students' mathematical connection ability and the Group Embedded Figure Test (GEFT). The data analysis technique used an independent sample t-test and a two-way ANOVA test. The results showed that the improvement of students' mathematical connection ability who obtained the GeoGebra-assisted project-based learning model was better than students who obtained the project-based learning model. There is no interaction effect of learning models and cognitive styles on the achievement and improvement of students' mathematical connection abilities. The implication of this research is to provide significant changes in student learning habits in integral calculus courses to use technology and foster high self-regulated learning. This research has implications for universities implementing project-based learning models combined with other technology applications in other subjects.

Elementary school students’ mathematical connection in problem-posing activities

The ability of mathematical connections possessed by students can be seen from the ability of students to compile math problems. This study aims to determine the type of mathematical connection made by elementary school students in problem-posing activities. The research was conducted using a qualitative descriptive method. The participants were 34 fifth grade students (male =16 female =18) of one of the public elementary schools in Mataram, West Nusa Tenggara. Data were collected from the results of student work and interviews. The analysis was carried out qualitatively according to the indicators of the complexity of the problem through problem posing learning. The results showed that there were four types of mathematical problems and their relatedness that occurred in student problem-posing activities, including (1) unsolvable math problems, (2) incorrectly solved math problems, (3) neglected math problems contextual information, and (4) mathematical problems that have complexity and relevance. Based on these results, it can be recommended for further research to determine strategies to improve students' mathematical connections in problem-posing activities.

Kemampuan Koneksi Matematis Siswa SMA Berdasarkan Kecemasan Matematika

One of mathematical abilities which is concepted by NTCM must be mastered by a student is mathematical connections. Some Study’s results showed that mathematics anxiety can influence students' mathematical abilities, including mathematical connections abilities. The study intends to know about mathematical connection’s ability that will be reviewed from high school students,s mathematics anxiety in solving problem related to material sequences and series. The samples in this study were 36 students of class XI IPA 2 at SMA N 1 Sekampung in East Lampung in academic year 2020/2021. Qualitative approach with descriptive method is used in this study. The tehnicque in collecting the data in this study by providing students math anxiety quessionair and tests to see the abilities of mathematical connections. There were 8 students indicated high math anxiety, 19 students indicated moderate math anxiety and 9 students indicated low math anxiety. The analysis was focused on the students who are chosen as the subject from each category. The conclusion is that student indicated high mathematics anxiety was able to achieve the ability to connect mathematical topics, connect mathematical topics to other sciences, while students with moderate and low mathematics anxiety can only achieve mathematics connection ability in indicator of connection in and between mathematical concepts. There is an anomaly in this study, which is due to high mathematics anxiety student get mathematical connection ability tend to be better. Keywords : Mathematical connection, mathematics anxiety, sequence

Conversion of the wavelength distribution to the energy spectrum of the wave

When designing a vessel, spectral calculating methods of wave induced oscillation are used, and during vessel operation, available technical means allow us to obtain only the pitch spectrum. For a complete solution of navigational tasks, it is necessary to have a wave disturbance spectrum and pitch amplitude-frequency characteristic as well. The latter function can be received in sailing, if obtaining the actual wave disturbance spectrum is possible. The lack of available and sufficiently accurate methods of actual wave disturbance assessment in modern navigation creates the need to use statistical mathematical models in addition to available information in order to connect various wave elements. Taking into account the possibility of obtaining the wavelength distribution from the wave field radar image, a hypothesis is formulated about the possibility of using a statistical mathematical connection between the wind wave lengths and heights. Within the proposed hypothesis, an algorithm is presented for converting the actual wavelength probability distribution obtained from wave field radar images into the disturbance frequency spectrum. The conclusion is made about possible application of the hypothesis in pitch transfer function assessment.

An Evaluation of Music’s Adherence to Benford’s Law Throughout History

Western Music history can be divided into six major categories: Medieval, Renaissance, Baroque, Classical, Romantic, and Post-War. We analyzed a large collection of music from each time period and discovered a clear mathematical connection. Within each time period, we found that the note frequencies measured in hertz (Hz) and note durations are all Benford distributed. We also found that as music progressed through time, note lengths adhered closer and closer to the Benford distribution with the exception of the Post-War time period.

ANALYSIS OF MATHEMATICAL CONNECTIONS ABILITY ON JUNIOR HIGH SCHOOL STUDENTS

Mathematical connection is the ability to make connections to understanding mathematical concepts that are associated with contexts outside of mathematics. Various studies revealed that the students' mathematical connection is still low; therefore, this study aims to describe the difficulties of junior high school students in mathematical connection ability. This research is a descriptive qualitative study. The study sample was 52 students from a junior high school in East Flores Regency. The methods used in this study were tests, observations, and interviews. The study results showed that the mathematical connection ability based on the three indicators of connection ability tends to be below. Students did not understand concepts that had been studying; easy to forget concepts, principles and procedures; not used to use concepts, principles and procedures; assume mathematics has nothing to do with other sciences; not accustomed to applying mathematical concepts in everyday life; lack of understanding about the story

Kemampuan Koneksi Matematik Siswa dalam Menyelesaikan Soal Investigasi Matematika

This study aims to determine and describe the level of mathematical connection ability of students in solving mathematical investigation questions in grade VII students at SMPN 2 Labuapi in the academic year 2020/2021. This type of research is descriptive qualitative research. The subjects in this study were 10 students of VII A class at SMPN 2 Labuapi. The data was collected in the form of test results of students' mathematical connection skills in solving mathematical investigation questions at triangles and quadrangle matter and the results of interviews. The test results were analyzed according to the indicators of students' mathematical connection ability, which is being able to connect the mathematical concepts that have been studied and those being studied and to connect the mathematical concepts to everyday life. Based on the results of data analysis, that the mathematical connection ability of students in solving mathematical investigation questions was still in the sufficient category. Overall there were 3 students (30%) in very poor category, 2 students (20%) in very good category, 2 students (20%) in good category, 2 students (20%) in good enough category, and 1 student (10%) in poor category.

Pengaruh Model Brain Based Learning untuk Meningkatkan Kemampuan Koneksi Matematis dan Pencapaian Self Concept Siswa

The purpose of this study was to analyze the improvement of students' mathematical connection skills and self-concept with a brain based learning (BBL) model with a scientific approach. The background of this research is that the reality on the ground shows that students' mathematical connection abilities are not as expected. One of the factors causing these problems is learning that does not provide flexibility for students to optimally empower the potential of the brain. This resulted in students having difficulty connecting between materials and the level of student confidence that was lacking. This study uses a quantitative approach with a quasi-experimental method. The sample in this study were 37 students in the control class and 36 in the experimental class. The instrument used is a mathematical connection ability test and a self-concept questionnaire. The results of the study are: 1) the increase in mathematical connection ability with the BBL model is higher than with the scientific approach; 2) the achievement of students' self-concept with the BBL model is better than the scientific approach; 3) there is a relationship between the ability of mathematical connections and students' self-concept with the BBL model. Based on the results of the study, it is hoped that the next researcher can choose a method that can encourage the growth and development of students' positive self-concepts, in order to influence students' beliefs about their abilities, and ultimately affect student achievement.

Analysis of Junior High School Students' Mathematical Connection on The Ratio and Proportion Concepts

The purpose of this study was to obtain an overview of the mathematical connections of junior high school students on the concepts of ratio and proportion. This research uses a descriptive qualitative method with data triangulation. The research participants were four junior high school students in Sukabumi. The instrument used in this study consisted of a description test of three questions that had been consulted with experts and based on considerations regarding indicators of mathematical connection ability. Based on the results of the study, it is known that the ability of students to recognize and use connections between mathematical ideas is 50%, the ability of students to connect and apply mathematical concepts with other disciplines is 50%, and the ability of students to connect and apply mathematical concepts to problems in everyday life with a percentage of 50%. The results showed that the mathematical connection ability of some junior high school students in Sukabumi on the concept of comparison was included in the poor category.

Koneksi Matematis Siswa pada Tugas Matematis Berbasis Hasil Pertanian: Konteks, Konsep, dan Prosedur Matematis

The mathematical connection is a crucial ability possessed by vocational high school students in solving problems by their field of expertise. Agriculture is a field of expertise that requires a lot of mathematical connection skills to solve various problems. Increasing the ability of students' mathematical connections can be facilitated by the teacher by constructing mathematical tasks in the agricultural sector. This qualitative research using the case study method describes the construction of mathematical tasks based on agricultural products and the mathematical connection ability of students in solving the task. Mathematical task construction is carried out by integrating agricultural product contexts and mathematical concepts. The mathematical task was used in Grade X Agribusiness Expertise students of Agricultural Product Processing. Data retrieval of students' mathematical connection abilities was carried out through tests, observation results, answer sheets, and interviews that focused on connecting contexts with mathematical concepts, connections between mathematical concepts, and connections to mathematical procedures. The results of the student data analysis showed that the ability of mathematical connections was hampered by the ability of the connection between mathematical concepts. It is necessary to increase student's mathematical connections by constructing mathematical tasks with various mathematical concepts.