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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.

Limit of a function is the main of calculus that teached in high school. The concept is the value of a function gets closer or approaches some number. This research focuses on finding the use of the limit function concept in every sectors in our daily, inside and outside the mathematic. This research was conducted to increase motivation to students in studying limit of functions in school  and to become a source of knowledge for others. The research method used is study literature. The result of this reseach is the concept of limit function widely used in various sectors of life. In engineering, the concept of limit is used to calculate the speed and maximum output of a machine. In science, the concept of limit exists in mathematics, physics, and chemistry. In the health sector, the concept of limit is used in the eye checkup and in daily, the concept of limit is used with the expression almost, that something is only close, but does not happen.

The research method used in this research is descriptive qualitative research and the form of research used is a case study with the subject being students of class X IIS 4 consisting of 30 students. The data collection tool used was a learning style questionnaire, a test of mathematical problem solving abilities in the form of 2 essays, and interviews with 6 students, namely 2 students with a visual learning style, 2 students with an auditory learning style, and 2 students with a kinesthetic learning style. Before being used in this study, the questions were tried out to determine validity, discriminatory power, index of difficulty, and test reliability. From the results of the study it can be concluded that the students' mathematical problem-solving abilities in terms of learning styles in SPLTV material as a whole have a percentage of 65% with moderate criteria. The sub-problems in this study are as follows: (1) The mathematical problem solving ability of students with a visual learning style has a percentage of 64.82% with moderate criteria; (2) Mathematical problem solving ability of students with auditory learning style ability has a percentage of 72.92% with moderate criteria; (3) The ability of students' mathematical problem solving with learning styles has a percentage of 61.72% with low criteria.    

This research aims to produce learning media for the Ethnomathematics Student Worksheet on Traditional Market Snacks in Pontianak City on the flat-sided building material that reaches the level of validity, practicality, and effectiveness. This study uses a 4D design model, which is modified into 3D, namely define (definition), design (design), development (development), without using the fourth stage, namely disseminate, because this refers to the initial goal of this research is to develop valid, practical and effective media contained in the third step of the development of this model, namely development. The subjects in this study were students of class VIII SMP Suster Pontianak with a total of 20 students. The instruments used in this study were validation sheets, questionnaires, and test questions. Based on the results of the first study, the validation of the Ethnomathematics Student Worksheet with an average value of 84,76% from expert activities was very valid with a very good category. The second is the value of practicality, seen from the value of the questionnaire filled in by the teacher, the percentage is 97% with very practical criteria. to see the effectiveness of the ethnomathematics-based student worksheet learning media compared to the Likert scale index, with a percentage of 81.11% in the very effective criteria.    

Penelitian ini bertujuan untuk menghasilkan media pembelajaran Truth Or Dare Math berbasis strategi heuristik dalam materi peluang pada siswa kelas VIII SMP Negeri 1 Parindu yang mencapai tingkat kevalidan, kepraktisan, dan keefektifan. Penelitian ini menggunakan model rancangan pengembangan 4D, yang terdiri atas define (pendefinisian), design (perancangan), development (pengembangan), dan disseminate (penyebaran). Subjek dalam penelitian ini adalah siswa kelas VIII-1 SMP Negeri 1 Parindu sebanyak 30 orang siswa. Instrumen yang digunakan dalam penelitian ini adalah lembar validasi, angket, dan soal Posttest. Berdasarkan hasil penelitian pengembangan truth or dare math berbasis strategi heuristic terhadap kemampuan pemecahan masalah dalam materi peluang pada siswa kelas VIII SMP Negeri 1 Parindu tergolong valid, praktis, dan efektif untuk digunakan.    

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.

Adolescence is a period of transition or transition due to biological and psychological growth, development, and changes. Biological changes are marked by the growth and development of primary sex, while psychological changes are characterized by changes in attitudes, feelings, and emotions. This transitional period is dubbed a period full of storms and stress, because it causes emotional upheaval, anxiety, and discomfort because the teenager is required to adapt and accept all the changes that occur. The role of nurses that can be used is to provide complementary therapies, namely a combination of aromatherapy and music therapy in reducing anxiety during online learning. The method in this study is a quasi-experimental design with a pre-post test with control group. The sampling technique used was purposive sampling with a total of 60 respondents. The treatment was given in 4 sessions for 4 weeks. The treatment given is a combination of aromatherapy and music therapy. The measuring instrument used is the RCMAS anxiety instrument. The results of this study showed the effect of giving a combination of aromatherapy and music therapy on adolescent anxiety levels during online learning during the covid-19 pandemic (p <0.05). The results of the study are recommended to be able to reduce anxiety in adolescents during online learning during the covid-19 period.    

Pendekatan penelitian deskriptif kualitatif digunakan dalam penelitian ini. Subjek penelitian terdiri dari 17 siswa kelas VIII SMP Katolik Santu Petrus Pontianak. Pengambilan sampel penelitian menggunakan teknik purposive sampling. Tujuan penelitian ini dalah untuk mendeskripsikan kemampuan representasi yang dimiliki oleh siswa. Indikator yang dipakai dalam penelitian ini ada tiga diantaranya adalah menggunakan representasi visual untuk menyelesaikan masalah, menggunakan representasi kata atau teks tertulis untuk menyelesaikan masalah, dan Menggunakan representasi persamaan dan ekspresi matematis. Instrumen yang digunakan berupa lembar tes essay yang terdiri dari 3 soal dengan masing – masing soal memiliki satu indikator. Dari penelitian dapat diketahui bahwa siswa memiliki kemampuan representasi matematis yang rendah berdasarkan perolehan keseluruhan nilai yang mendapatkan rata – rata 47,24. Siswa dikategorikan berdasarkan tinggi, sedang, dan rendah, dimana siswa yang mendapat nilai tinggi ada 2 orang, siswa yang mendapat nilai sedang ada 7 orang, dan yang mendapat nilai rendah ada 8 orang. Siswa dengan nilai tinggi memiliki kemampuan representasi yang tinggi dibandingkan dengan siswa yang mendapat nilai sedang dan rendah.    

This study aims to (1) describe the obsession of the characters in the novel Guru Aini by Andrea Hirata, (2) describe the inner conflicts experienced by the characters in the novel Guru Aini by Andrea Hirata, (3) describe the relevance of the obsession of the characters in the novel Guru Aini by Andrea Hirata in literature learning in high school. The method used in the research is a qualitative description method. The data in this study were sentences, dialogues, and paragraphs in the novel Guru Aini by Andrea Hirata. The data source in this research is the novel Guru Aini by Andrea Hirata published in February 2021 published by PT Bentang Pustaka with a total of 336 pages. The data collection technique is done by using the library / reading technique, taking notes, and then entering it into the data collection table. Data analysis techniques used data reduction, data exposure, and inference. The validity of the data was obtained through source triangulation. The results of this study indicate that (1) the obsession of the characters in the novel Guru Aini by Andrea Hirata, there are four characters who have an obsession, Desi is one of the characters who has an obsession with Desi's obsession, which is obsessed with finding students who are geniuses in mathematics in Ketumbi's village. (2) inner conflict in the novel Guru Aini by Andrea Hirata, there are ten characters who have inner conflicts, Desi is a character who often experiences inner conflicts. (3) the relevance or relevance of the novel Guru Aini by Andrea Hirata in learning literature in class XII high school with basic competencies. 3.3 Analyzing fiction in novels.

The research method used in this research is Research and Development. The subjects in this study consisted of validation subjects consisting of material and media validators and test subjects consisting of 23 grade VII junior high school students. The research was conducted at SMP Negeri 10 Sungai Kakap. The instruments used in the study consisted of expert validation sheets, respondent questionnaires, and tests of mathematical understanding abilities. The purpose of this study was to determine the process of developing an Android-based math educational game using software construct 2 on mathematical abilities. The results of the study are as follows: The level of feasibility of an Android-based math education game using software construct 2 on the ability to understand the results obtained is 88.66% with very feasible criteria. The level of attractiveness of an Android-based math education game using software construct 2 on the ability to understand the results obtained is 88.19% with very interesting criteria. Improved mathematical understanding skills after the application of Android-based math education games. There is an increase From the calculation results obtained tcount> ttable = 8.85987> 1.71714, thus Ho is rejected Ha accepted.