bluuebunny/crossref_metadata_2025 huggingface dataset:
PENINGKATAN MOTIVASI DAN HASIL BELAJAR MATEMATIKA MELALUI MODEL PEMBELAJARAN QUANTUM TEACHING
Authors: Nurhanifah Siti , Harini Esti
Published: February 2022

The purposes of this research was to describe the interest and achievement of mathematics in student B eight grade junior high school PIRI 2 Yogyakarta using Quantum Teaching. This research was Class Action Research (CAR). The technique of data done by questionnaire, and tests. The results of the research that increases motivation and mathematics achievement. The average percentage of student motivation questionnaire at pre-cycle was 73,89%, became 80,74 % at cycle I, and became 84,35% at cycle II. Achievement of the KKM also increased. Average of achievement at pre-cycle 47 , 54,66 at the first cycle, and 70,31 at the second cycle. Based the results of the research, learning model of Quantum Teaching can increase motivation and achievement of mathematics. So, teachers can implement Quantum Teaching type as a variation of learning.
PENERAPAN SISTEM AMONG DENGAN GROUP INVESTIGATION UNTUK MENINGKATKAN MOTIVASI DAN HASIL BELAJAR MATEMATIKA
Authors: Alfansuri Dite Umbara , Harini Esti
Published: February 2022

The purpose of this research is to improve students' motivation and learning outcomes in mathematics through application of system among with cooperative learning Group Investigation (GI) in class VIII F SMP Negeri 1 Banguntapan. This research is Classroom Action Research (CAR) conducted in two cycle. The subjects of this research is students of class VIII F SMP Negeri 1 Banguntapan totaling 27 students. Data collection techniques in this research uses observation, questionnaires, tests and documentation. The results showed that motivation and mathematics learning outcomes has increased. Based on the results of research,math teachers can implement application of system among with cooperative learning Group Investigation (GI) as a variation in mathematics learning model.
PENINGKATAN HASIL BELAJAR PANGKAT RASIONAL DAN BENTUK AKAR MENGGUNAKAN MEDIA LEMBAR SIMULASI
Authors: Wahyuni Sri
Published: February 2022

Sheet simulation is a media that can improve student learning outcomes, increasing the active response of students, and relieve tension and tired of learning mathematics. Media is in accordance with the character of the student and student interests and habits of students. The learning process with this medium is a model of the games and discussions group involving a student with a jovial mood, learning and thinking.
KORELASI ANTARA KEMAMPUAN AWAL, POLA BELAJAR, DAN LATAR BELAKANG PENDIDIKAN ORANG TUA DENGAN PRESTASI BELAJAR MATEMATIKA SISWA KELAS VII SMP SE-KECAMATAN KARANGPUCUNG KABUPATEN CILACAP
Authors: Susanti Yani , Kusmanto Benedictus
Published: February 2022

The purpose of this research was to find out correlate between beginning skill, learning pattern and background of parents education with mathematics learning achievement on 7th grade students at the whole district of Karangpucung, region of Cilacap at 2013/2014 academic year. The population in this research were all students ofÂ  7th grade students at the whole district of Karangpucung, region of Cilacap at 2013/2014 academic year and the samples taken at cluster random sampling with amont 130 students. Data collection method used was a documentation, a questionnaire and a test technique. The result showed the Sig = 0,000 < 0,05 for mayor hipotesis. Meanwhile, the result of minor hipotesis showed the Sig = 0,001<0,05; Sig = 0,000<0,05; and Sig = 0,020<0,05. So, there is correlate between beginning skill, learning pattern and background of parents education with mathematics learning achievement on 7th grade students at the whole district of Karangpucung, region of Cilacap at 2013/2014 academic year as collective and partial. It is expected that students care about beginning skill, learning pattern to mathematics learning achievement increasingly.
PERBEDAAN KEMAMPUAN PEMECAHAN MASALAH DENGAN PEMBELAJARAN LEARNING CYCLE DAN KONVENSIONAL PADAMAHASISWA PRODI PENDIDIKAN MATEMATIKA FKIP UST
Authors: Arigiyati Tri Astuti , Istiqomah Istiqomah
Published: February 2022

This study aims to determine differences in problem solving skills with the learningcycle and conventional models in Mathematics Education Programm UST. This study design is a randomized pretest-posttest control group design. The sample was a student of fourth semester. Data collected by the testing techniques that comprise the initial test (pretest) and final test (posttest). Instruments in this research is a test instrument that consists of 4 questions about the pretest and posttest 5. The trials instruments include validity, different power, test difficulty levels, and reliability testing. Data analysis techniques include equality test average, which is the prerequisite test normality and homogeneity test, and analysis of the N gain using the t test. The results showed that there are differences in problem-solving abilities with learning model and conventional learning cycle. It was seen from the significant value of the index gain = 0.000 <Î± = 0:05. Based on the average ability of mathematical reasoning and problem solving shows that the model Learning Cycle better than conventional models.
UPAYA MENINGKATKAN MOTIVASI DAN PRESTASI BELAJAR MATEMATIKA DENGAN MODEL PEMBELAJARAN THINK PAIR AND SHARE (TPS)
Authors: Purwantari Kristiana
Published: February 2022

The purpose of this study was to describe the implementation process of learning mathematics through the learning model And Think Pair Share (TPS) in order to increase student motivation and learning achievement of class VII F SMP N 2 Greetings. The subjects in this study were students of class VII F SMP N 2 Regards, while the object of the study was motivation and achievement in the implementation of learning mathematics using learning models And Think Pair Share (TPS).Data collection techniques in this study performed using the observation sheet, sheet motivation questionnaire, and learning achievement tests. Instrument research using observation sheets, questionnaire motivation, and test.Data analysis techniques for observation sheet is done by calculating a percentage score for each indicator while learning mathematics achievement is done by calculating the average value of the percentage of students who meet the grade criteria for completeness Minimal. The results showed that after learning model applied And Think Pair Share (TPS) and the motivation to learn mathematics achievement increased. This can be shown by an increase in the average yield percentage of student motivation based on the observation sheet. Based on the observation sheet for each cycle is the first cycle of students at 62.50%, for the second cycle of 72.22%. While the average value of learning mathematics achievement of students increased from an average initial value of 72.12 into a 75.26 in the first cycle and the second cycle becomes 80.32. Given the learning model And Think Pair Share (TPS) to further encourage student motivation and also can improve students' mathematics learning achievement, the school is expected to apply the learning model.
ANALISIS KESALAHAN MENGERJAKAN SOAL SISI TEGAK LIMAS SEGIEMPAT SISWA KELAS IX MTs NU SALAM TAHUN PELAJARAN 2013/2014
Authors: Yuliani Yuliani
Published: February 2022

The purpose of this research to describe how far concept, procedure and calculation error are done by student and to know kind of error are dominant done by student in class IX MTs NU Salam. The type of this research is qualitative descriptive research. From analysis process, ascertainable that the student done the concept error 33%, procedure error 24%, and calculation error 43%.The calculation error are the most error doing by student.Threrefore, teacher shoud repair quality of learning activity in order to mathematics achievement of student increased.
ANALISIS KESALAHAN DALAM MENYELESAIKAN SOAL MATEMATIKA SISWA KELAS XI SMK TAMTAMA KARANGANYAR TAHUN AJARAN 2013/2014
Authors: Istiqomah Nurul
Published: February 2022

An Error Analysis in SolvingMathematic Task to the Eleventh Grade Students of SMK Tamtama KaranganyarÂ  in Academic Year 2013/2014. This studyaims to determinehow largea percentage ofthe errors, procedural errorsand errorsincomputingmath problemsto solvefundamentalintereststudentsof SMKTamtamaAK2. This was aqualitative descriptive studysubjectswere 42students drawnbypurposive sampling technique. The instrument used wasa test.Data Collection Technique uses ThinkOutlouds(TOL) technique. Data were analyzed usingdata analysis techniquesdeveloped byLexy J.Moleong: (1) review all thedata collected, (2) assess thestudents' workinmathematical problemsolvingfundamentalinterest, (3) to verify the data(conclusion). As forcheckingthe validity of thedata usingtriangulation techniques. The results ofthis study indicate that(1) the percentage oferrorswas11.43% with very low, (2) the percentageerrorof 12.38% standardwith very low, (3) the percentageerrorof 18.57% computationby categoryvery low. Suggestionsresearchers (1) for prospectiveteachers, may be able to preventand overcomethedifficultiesat least reducethe difficulties experiencedby students, (2) for teachers, provide trainingto students toperform calculations quickly andaccurately
UPAYA MENINGKATKAN MOTIVASI BELAJAR DAN HASILBELAJAR MATEMATIKA SISWA DENGAN MODEL THINK PAIR SHARE SISWA KELAS X AKUNTANSI SMK PGRI 1 SENTOLOKULON PROGO
Authors: Parianti Parianti
Published: February 2022

The aim of this research describes about Cooperative Learning process type Think Pair Share (TPS) methode X grade students of accountancy in SMK PGRI 1 Sentolo Kulon Progo. The objecs of this research were X grade students accountancy in SMK PGRI 1 Sentolo Kulon Progo. This research tocused in motivation in learning process and result of mathematic with cooperative learnig process type Think Pair Share methode. The result of this research showed the use of cooperative learning process type Think Pair Share (TPS). The motivation of learning and the result of learning mathematics were increasing. The increasing of students motivation in learning was about 57,58%. The use of cooperative learning process type Think Pair Share (TPS) was increasing too. In the first activity was about 62,19% and in the second activity increased about 76,25%. It showed that all of the students achieved the good motivation of learning. The students result increased too. In the pra activity the students got the average of 50,5 the first activity was about 69,92 then the second activity was average of 81,59 with the precentage about 81,85% the students that achieved the Kriteria Ketuntasan Minimum (KKM).
ANALISIS KESESUAIAN MATERI DENGAN KOMPETENSI PADA BUKU AJAR BAHASA SUNDA â€œPANGANTEUR BASA SUNDA PIKEUN MURID SD/MI KELAS VIâ€
Authors: Sudarmansyah Ranu , Haerudin Dingding , Novianita Vinie
Published: February 2022

Textbooks have a very important role in the learning process so there is a need for a conformity between the material in the textbook and the competencies in the curriculum. There had been a lot of research on the quality of textbooks. However, there was still a lack of textbooks at the elementary school level. Therefore, research on Sundanese language textbooks at the elementary school level was needed to measure the conformity of the content and the conformity of the material themes. The purpose of this study was to determine the level of conformity of the descriptions of the materials with core competencies, basic competencies & indicators. The method used in this research was descriptive analysis with literature study techniques. The data source was the textbook Panganteur Basa Sunda with 2013 Curriculum SD/ MI Class VI revised by Kanisius. From the results of the analysis, it was found that the level of conformity of (1) material descriptions with core competencies reached 75%, (2) the conformity level of material with basic competencies reached 91.5% and (3) the level of conformity of material with indicators of the competency achievement reached 85%. Thus, overall Panganteur Basa Sunda book had a good category with the level of conformity of the material with the curriculum reaching 84%. However, the conformity of the teaching instructions with the operational verbs was still lacking (72.8%). Nevertheless, overall this book was suitable to be used in Sundanese language learning in grade VI.
MENGOPTIMALKAN PENILAIAN DENGAN LIVEWORKSHEET PADA FLIPPED CLASSROOM DI SD
Authors: Rhosyida Nelly , Muanifah Mahmudah Titi , Trisniawati Trisniawati , Hidayat Rosidah Aliim
Published: February 2022

The purpose of this study was to describe the use of a liveworksheet in optimizing the assessment of flipped classrooms in elementary school. This research used a descriptive qualitative approach. This research instrument was a questionnaire. The subjects of this study were 100 teachers from various regions in Indonesia. The results of the study stated that 96% of respondents stated that the liveworksheet media was interesting to use in learning, 91% of respondents said that the liveworksheet could be adjusted to the needs of students at elementary school age. As many as 82% of respondents stated that the use of a liveworksheet could be used for authentic assessment, and 76% of respondents stated that it was easy to use it in learning. Based on this, it could be said that the liveworksheet could be used as an alternative to an online-based assessment tool that was attractive, interactive, easily-accessible, and presented a variety of activities that could be tailored to the characteristics of students
Pengembangan Media Pembelajaran Berbasis E-Learning Menggunakan Chamilo pada Pembelajaran Segitiga dan Segiempat
Authors: Febryana Eka , Pujiastuti Heni
Published: February 2022

Penelitian ini merupakan penelitian pengembangan (research and development) dengan tujuan mengembangkan sebuah media pembelajaran berbasis e-learning dengan menggunakan Chamilo pada materi segitiga dan segiempat Sekolah Menengah Pertama (SMP) kelas VII. Prosedur penelitian yang digunakan dalam penelitian ini mengadaptasi model pengembangan ADDIE. Hasil validasi media pembelajaran oleh ahli materi memperoleh nilai rata-rata 4,44 dan termasuk ke dalam kategori sangat valid, sedangkan hasil validasi oleh ahli media memperoleh nilai rata-rata 4,35 dan termasuk kedalam kategori sangat valid. Hasil penilaian respon siswa terhadap media pembelajaran yang dikembangkan mendapat nilai rata-rata 4,13 dan termasuk kedalam kategori baik. Berdasarkan hasil penelitian, maka media pembelajaran yang dikembangkan ini baik untuk digunakan untuk membantu proses pembelajaran matematika dengan materi segitiga dan segiempat.
Analisis Kesalahan Siswa dalam Menyelesaikan Soal Cerita Program Linear Berdasarkan Prosedur Polya
Authors: Fauziyah Ratu Syifa , Pujiastuti Heni
Published: February 2022

Penelitian ini bertujuan untuk mendeskripsikan persentase dari masing-masing jenis kesalahan siswa dan kesalahan yang paling sering dilakukan siswa dari soal cerita materi Program Linear berdasarkan prosedur Polya. Metode yang digunakan yaitu deskriptif kualitatif. Teknik pengambilan sampel pada penelitian ini yaitu teknik purposive sampling. Instrumen yang digunakan pada penelitian ini yaitu tes tertulis berupa soal cerita Program Linear. Subjek pada penelitian ini yaitu siswa kelas XI IPS 1 SMA Negeri 5 Kota Serang tahun ajaran 2019/2020. Hasil penelitian menunjukkan bahwa persentase kesalahan siswa kelas XI IPS SMA Negeri 5 Kota Serang dalam menyelesaikan soal cerita Program Linear berdasarkan prosedur Polya yaitu Kesalahan memahami masalah soal cerita Program Linear sebesar 11,35% dengan kategori sangat rendah; Kesalahan membuat perencanaan sebesar 21,28% dengan kategori rendah; Kesalahan melaksanakan perencanaan sebesar 29,79% dengan kategori rendah; Kesalahan mengecek kembali sebesar 37,59% dengan kategori rendah; Kesalahan paling banyak dilakukan siswa terletak pada kesalahan mengecek kembali sebesar 37,59%.
Hubungan antara Minat Belajar, Perhatian Orang Tua, dan Persepsi terhadap Matematika dengan Prestasi Belajar
Authors: Kholisyoh Syifa Annisatul , Kusmanto Benedictus , Arigiyati Tri Astuti
Published: February 2022

Penelitian ini bertujuan untuk membuktikan hubungan minat belajar, perhatian orang tua, dan persepsi siswa terhadap matematika dengan prestasi belajar matematika. Metode dalam penelitian ini adalah metode survei menggunakan analisis korelasional. Sampel diperoleh secara acak sebanyak 97 siswa kelas VIII SMP Negeri Se-Kecamatan Kutowinangun yaitu SMP Negeri 1, 2, dan 3 Kutowinangun. Teknik analisis data menggunakan uji regresi ganda. Dapat diperoleh bahwa: Ada hubungan positif dan signifikan antara minat belajar, perhatian orang tua, dan persepsi siswa terhadap matematika dengan prestasi belajar matematika baik secara bersama-sama maupun mandiri. Hal ini dilihat dari nilai koefisien korelasi yang positif dan sig. > 0,05.
Kesalahan dalam Menyelesaikan Soal Matematika Siswa Kelas X IPA SMA Taman Madya Ibu Pawiyatan Yogyakarta
Authors: Wae Sebastianus , Arigiyati Tri Astuti , Ayuningtyas Annis Deshinta
Published: February 2022

ABSTRAK Penelitian ini bertujuan untuk mengetahui persentase kesalahan konsep, persentase kesalahan prosedur, persentase kesalahan komputasi, dan jenis kesalahan mana yang paling banyak dilakukan siswa kelas X IPA SMA Taman Madya Ibu Pawiyatan Yogyakarta. Objek penelitian ini adalah kesalahan siswa dalam menyelesaikan soal matematika pokok bahasan perbandingan trigonometri pada segitiga siku-siku. Jenis penelitian ini termasuk deskriptif kualitatif. Teknik pengumpulan data menggunakan teknik tes dan wawancara. Instrumen berupa 5 soal bentuk uraian. Dari 5 soal tersebut dinyatakan sangat valid dan sangat reliabel. Hai penelitian menunjukkan bahwa siswa kelas X IPA SMA Taman Madya Ibu Pawiyatan Yogyakarta melakukan kesalahan konsep sebesar 44,8% dengan kategori cukup, melakukan kesalahan prosedur sebesar 71,5% dengan kategori tinggi, melakukan kesalahan komputasi 48,1% dengan kategori cukup, dan kesalahan yangÂ  paling banyak dilakukan adalah kesalahan prosedur sebesar 71,5% dengan kategori tinggi. Guru membiasakan siswa untuk menuliskan apa yang diketahui dan apa yang ditanya ketika menyelesaikan soal matematika.Â ABSTRACTThis study aims to determine the percentage of concept errors, procedural errors, computational errors, and to find out the most common mistakes made by students in solving math problems in class X IPA of Taman Madya High School Ibu Pawiyatan Yogyakarta Academic Year 2019/2020.The object of this research is the students' mistake in solving math problems. This type of research is descriptive qualitative. Data collection techniques using the test interview techniques and techniques. Test instrument in the form of test description 5 question. Of the five questions stated valid and reliable. The results showed thatgrade X science students at Taman Madya High School Ibu Pawiyatan made a concept mistake on average by 44,8% with enough categories,the average procedural error was 71,5% with a high category, and the computational error rate was up to 48,1 â„… with a sufficient category. The most common type of mistake students make in completing a math problem is a procedural error of 71.5 â„…. It is recommended to teachers to get their students used to writing the unknown and asked when solving math problems. Students must also be accustomed to solving problems in order to emerge creativity.
Model Pembelajaran Group Investigation dengan Pendekatan 3N untuk Meningkatkan Motivasi dan Hasil Belajar Matematika
Authors: Daen Nikodemus , Istiqomah Istiqomah , Arigiyati Tri Astuti
Published: February 2022

ABSTRAK Tujuan penelitian ini mendeskripsikan model Group Investigation (GI) dengan pendekatan 3N (Niteni, Nirokke, Nambahin) dapat meningkatkan motivasi dan hasil belajar matematika siswa Kelas X MM SMK Pawiyatan Tamansiswa Yogyakarta. Penelitian ini termasuk jenis penelitian Tindakan kelas. Sampel penelitiannya siswa kelas X MM dengan jumlah 11 siswa. Objek dalam penelitian ini adalah motivasi dan hasil belajar matematika, diperoleh dari pembelajaran matematika dengan menggunakan model pembelajaran GI dengan pendekatan 3N. Hasil penelitian ini menunjukkan model pembelajaran GI dengan pendekatan 3N, motivasi dan hasil belajar matematika meningkat dari pra siklus ke siklus I dan siklus II. Rata-rata persentase indikator motivasi pra siklus 73,41, siklus I 74,57 dan pada siklus II 79,59. Rata-rata nilai pra siklus Â 69,27, siklus I Â 78,71, dan 84,66 pada siklus II. Pada pra siklus KKM siswa mencapai 45.45% pada siklus I 63,64%, dan 81,82% pada siklus II. Sehingga model GI dengan pendekatan 3N dapat meningkatkan motivasi dan hasil belajar matematika.Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ABSTRACTThe purpose of this study is to describe the Group Investigation (GI) model with the 3N approach (Niteni, Nirokke, Nambahin) which can improve motivation and mathematics learning outcomes of class X MM SMK Pawiyatan Tamansiswa Yogyakarta. This research is a type of classroom action research. The research sample was students of class X MM with a total of 11 students. The objects in this study are the motivation and learning outcomes of mathematics, obtained from learning mathematics using the GI learning model with the 3N approach. The results of this study indicate that the GI learning model with the 3N approach, motivation and mathematics learning outcomes increased from pre-cycle to cycle I and cycle II. The average percentage of pre-cycle motivation indicators 73.41, 74.57 in first cycle and 79.59 in second cycle. The average pre-cycle value was 69.27, in the first cycle 78.71, and 84.66 in the second cycle. In the pre-cycle KKM students reached 45.45% in the first cycle 63.64%, and 81.82% in the second cycle. So that the GI model with the 3N approach can increase motivation and mathematics learning outcomes.
Problematika Pembelajaran Daring Pelajaran Matematika di SMAN 1 Pejagoan Kabupaten Kebumen
Authors: Kamila Nurul Izza , Rahmawati Fadhilah , Wisudawati Selvi Yulia , Khulasoh Hanik Umi , Lestari Ani Kurnia , Rahma Sandri Yulia
Published: February 2022

Dimasa pandemi covid-19 seperti sekarang ini pembelajaran dilakukan secara daring yaitu tidak dengan tatap muka secara langsung. Dengan dilakukannya pembelajaran daring ini terdapat beberapa problematika yang muncul. Para siswa dituntut untuk dapat beradaptasi dengan keadaan dimasa pandemi covid-19 ini dan juga dituntut untuk dapat mengatasi problematika pembelajaran daring yang muncul.
Kesalahan Penyelesaian Soal Geometri Transformasi Berdasarkan Gaya Belajar: Studi Kasus Mahasiswa Calon Guru Matematika
Authors: Sugandi Eko
Published: February 2022

ABSTRAK Keberagaman Karakteristik mahasiswa menjadi salah satu faktor adanya perbedaan kesalahan dalam penyelesaian soal Geometri Transformasi. Penelitian ini dilakukan dengan tujuan untuk identifikasi jenis-jenis kesalahan penyelesaian soal geometri transformasi yang dilakukan oleh mahasiswa calon guru matematika berdasarkan gaya belajar. Kesalahan yang diteliti didasarkan pada kriteria prosedur Kastolan yang terdiri dari kesalahan konseptual, kesalahan prosedural, dan kesalahan teknikal. Metode penelitian yang digunakan yaitu metode kualitatif. Subjek yang digunakan dalam penelitian terdiri dari tiga orang mahasiswa dengan kesalahan terbanyak untuk masing-masing kategori gaya belajar. Teknik pengumpulan data yang dilakukan menggunakan instrumen tes dan wawancara. Hasil dari penelitian diperoleh bahwa ada dua jenis kesalahan yang dilakukan oleh mahasiswa calon guru dengan gaya belajar visual yaitu kesalahan konseptual dan kesalahan prosedural. Mahasiswa calon guru dengan gaya belajar auditori memiliki tiga jenis kesalahan yaitu kesalahan konseptual, kesalahan prosedural, dan kesalahan teknik. Mahasiswa calon guru dengan gaya belajar kinestetik memiliki dua jenis kesalahan yaitu kesalahan konseptual dan kesalahan prosedural. Berdasarkan hasil penelitian, direkomendasikan adanya penelitian lanjutan untuk mengidentifikasi faktor penyebab terjadinya persamaan jenis kesalahan yang dilakukan oleh mahasiswa calon guru dengan gaya belajar visual dan gaya belajar kinestetik.Â ABSTRACTThe diversity of student characteristics is one factor in the difference in errors in solving transformation geometry problems. This research was conducted with the aim of identifying the types of errors in solving geometric transformation problems made by prospective mathematics students based on their learning styles. The errors investigated were based on the criteria of the Kastolan procedure which consisted of conceptual errors, procedural errors and technical errors. The research method used is a qualitative method. The subjects used in the study consisted of three students with the most errors for each category of learning style. The data collection technique was performed using test and interview instruments. The results of the study showed that there were two types of errors made by student teachers with visual learning styles, namely conceptual errors and procedural errors. Prospective teachers with auditory learning styles have three types of errors, namely conceptual errors, procedural errors, and technical errors. Prospective student teachers with kinesthetic learning styles have two types of errors, namely conceptual errors and procedural errors. Based on the research results, it is recommended that additional research be conducted to identify the factors behind the similarity of the types of errors made by candidate student teachers with visual learning styles and styles. kinesthetic learning.
Peningkatan Hasil Belajar melalui Model Problem Based Learning Materi Trigonometri Kelas X Tata Busana
Authors: Hamidah Nur
Published: February 2022

ABSTRAK Penelitian ini merupakan Penelitian Tindakan Kelas. Subjek penelitian adalah siswa kelas X Tata Busana 2 SMK Negeri 2 Temanggung Tahun 2019/2020 yang berjumlah 36 siswa terdiri dari 36 siswa perempuan dan 0 siswa laki-laki. Instrumen yang digunakan dalam penelitian ini adalah instrumen tes dan instrumen non tes. Instrumen non tes terdiri dari lembar observasi, catatan lapangan dan dokumentasi. Teknik pengumpulan data dilakukan dengan teknik tes dan teknik non tes. Analisis dan pengolahan data menggunakan teknik kuantitatif dan teknik kualitatif. Penelitian dilaksanakan sebanyak dua Siklus dengan masing-masing Siklus terdiri dari empat tahap yaitu perencanaan, tindakan, observasi dan refleksi. Rata-rata nilai tes individual naik dari 61,53 pada Siklus 1 menjadi 88,15 pada Siklus 2. Ketuntasan belajar klasikal juga naik 66,7 % dari 33,3% menjadi 100%. Hasil penelitian telah mampu menjawab perumusan masalah, mencapai tujuan penelitian dan membuktikan hipotesis penelitian yaitu penggunaan Problem Based Learning dapat meningkatkan hasil belajar pada materi Trigonometri.Â ABSTRACT This research is a Classroom Action Research. The research subjects were students of class X Fashion Design 2 SMK Negeri 2 Temanggung in 2019/2020, totaling 36 students consisting of 36 female students and 0 male students. The instruments used in this study were test instruments and non-test instruments. The non-test instruments consist of observation sheets, field notes and documentation. The data collection technique was done by using test techniques and non-test techniques. Analysis and data processing using quantitative techniques and qualitative techniques. The research was carried out in two cycles with each cycle consisting of four stages, namely planning, action, observation and reflection. The average individual test score increased from 61.53 in cycle 1 to 88.15 in cycle 2. Completeness of classical learning also increased by 66.7% from 33.3% to 100%. The research results have been able to answer the problem formulation, achieve research objectives and prove the research hypothesis, namely the use of Problem Based Learning can improve learning outcomes on Trigonometry material.
Analisis Kemampuan Pemecahan Masalah Matematis Siswa SMP Pada Materi Himpunan
Authors: Fitriyah Siti Laelatul , Haerudin Haerudin
Published: February 2022

ABSTRAK Kemampuan pemecahan masalah matematis adalah kemampuan yang sangat penting untuk dimiliki oleh siswa dalam proses penyelesaian masalah matematika. Penelitian ini bertujuan untuk mendeskripsikan kemampuan pemecahan masalah matematis siswa pada materi himpunan. Jenis penelitian yang digunakan adalah kualitatif deskriptif. Subjek penelitian ini adalah siswa kelas VII B SMP Negeri 1 Lebaksiu tahun pelajaran 2020/2021 sebanyak 30 orang yang dipilih menggunakan teknik purposive sampling. Teknik pengumpulan data yang digunakan adalah metode tes, wawancara, dan dokumentasi. Teknik analisis data yang dilakukan yaitu reduksi data, penyajian data, dan penarikan kesimpulan. Instrumen penelitian yang digunakan adalah 2 butir soal uraian mengenai kemampuan pemecahan masalah pada materi himpunan dengan indikator pemecahan masalah matematis berdasarkan teori Polya.Â ABSTRACTSolving Mathematical issue is a crucial skill that students must acquire to solve mathematical problems. This study aimed to describe students' skills on solving mathematical issues on mathematic set. This study employed a descriptive qualitative design. The subjects of this study were 30 first-grade students of 1 Lebaksiu Junior High School during the 2020/2021 academic year who were selected using the purposive sampling technique. This research employed tests, interviews, and documentation to colled data. The instrument aimed to discover 2Â  item description questions regarding the problem-solving ability of the set material with indicators of mathematical problem solving based on Polya's theory, namely: 1) understanding the problem 2) planning the solution 3) solving the problem according to the plan 4) checking the procedure and the results of the solution. To analyze the data, data reduction, data presentation, and conclusion drawing was employed.
Communicative Potential of the Russian Language Morphological Means in the WhatsApp Messenger
Authors: Grebelnik Tatyana Vladimirovna
Published: February 2022

The aim of the study is to determine the specifics of using the morphological means of the Russian language in the WhatsApp messenger. The article highlights the features of the functioning of grammatical forms of significant and functional parts of speech, as well as modal words in messenger communication. The scientific originality consists in determining the specifics of using the morphological means of the Russian language in the WhatsApp messenger, in identifying those grammatical forms that are most actively used to express the communicative intentions of the participants in the messenger communication. As a result of the study, it has been determined which words of which parts of speech are frequent and actively used for this type of communication, and which, on the contrary, do not occur or are of little use.
Анализ размерного несоответствия решеток α- и α2-фаз в модельных псевдо-α-сплавах титана
Authors: Попов А. А. , Попов Н. А. , Луговая К. И. , Попова Е. Н. , Нарыгина И. В.
Published: February 2022

Проведен анализ несоответствия решеток α- и α2-фаз в зависимости от исходной структуры и легирования твердого раствора для псевдо-α-сплавов титана с повышенным содержанием алюминия. Исследована структура сплавов методами растровой и просвечивающей электронной микроскопии, а также рентгеноструктурного фазового анализа. Показано, что легирование сплава оловом и цирконием уменьшает несоответствие решеток фаз, особенно в случае формирования структуры α + α2 по спинодальному механизму. Обсуждена термическая стабильность формирующихся структур.
Влияние температуры отжига на микроструктуру и механические свойства сплава Ti - 6 % Al - 4 % V, полученного селективным лазерным плавлением
Authors: Юньтао Цюй , Чжитин Луо , Синь Дун , Яньань Чжоу , Ци Сунь , Мяомяо У , Нин Ли , Цзячжэнь Янь , Бяо Чзан , Жуй Ли , Шен Сюй
Published: February 2022

Исследовано влияние отжига при 700, 800, 900 и 1000 °C на микроструктуру и механические свойства сплава Ti - 6 % Al - 4 % V, полученного методом селективного лазерного плавления. Определены пределы прочности и текучести, а также относительное удлинение и твердость образцов титанового сплава в исходном состоянии и после отжига. Проведены рентгеноструктурный и микроструктурный фазовые анализы. Проанализированы изменения структуры сплава в процессе отжига при различных температурах. Показано, что с повышением температуры отжига интенсивность изменения структуры сплава возрастает, микротвердость и прочностные характеристики снижаются, а пластические - увеличиваются.
Perancangan Aplikasi Website E-Learning Menggunakan Model Spiral Pada SMP Diponegoro 1 Purwokerto
Authors: Priyatin Hani , Septiana Laila
Published: February 2022

Teknologi Informasi begitu cepat berkembang sesuai dengan kebutuhan manusia. Salah satunya dalam bidang pendidikan yang banyak digunakan untuk memperoleh suatu informasi dibelahan dunia lain tanpa terhalang oleh adanya jarak, waktu dan tempat. Teknologi pada dunia pendidikan telah banyak menghasilkan inovasi baru dari konvensional atau sering dikenal dengan istilah pembelajaran komunikasi lisan bertatap muka antara guru dengan siswa dalam proses belajar mengajar yang kemudian berinovasi kedalam bentuk digital dikenal dengan sebutan E-learning. Sistem ini dibuat menggunakan perangkat lunak Atom Text Editor dan XAMPP. Sedangkan bahasa pemrograman yang digunakan yaitu HyperText Markup Language (HTML), Hypertext Preprocessor (PHP), Javascript dan JQuery. Dengan adanya sistem E-learning diharapkan dapat mempermudah proses belajar, mengerjakan dan merekap nilai tugas siwa, serta dalam merekap absensi akan membuat guru lebih efisien.
OPTIMASI K-NEAREST NEIGHBOR DENGAN PARTICLE SWARM OPTIMIZATION UNTUK MEMPREDIKSI HARGA TEMBAKAU
Authors: Suhartini Luluk , Sulthan M Burhanis , Wahyudi Imam
Published: February 2022

Komoditas tembakau merupakan salah satu penyumbang pendapatan keuangan terbesar bagi negara, menjadi alasan penting dalam menempatkan komoditas tembakau dan produk olahannya sebagai komoditas yang strategis. namun dalam bidang pertanian, hampir semua aktivitas produksi sering dihadapkan dengan permasalahan fluktuasi harga dan hasil produksi. Untuk itu perlu dilakukan peramalan harga pada masa yang akan datang untuk dijadikan acuan dalam mengambil keputusan agar dapat mengurangi risiko serta meningkatkan keuntungan. Dalam penelitian ini digunakan metode K-NN dengan optimasi PSO. Metode ini merupakan salah satu metode yang baik untuk diterapkan dalam peramalan harga dan hasil penelitian menunjukkan bahwa performa K-NN  meningkat setelah dioptimasi dengan algoritma PSO. Hal ini dibuktikan dengan penurunan nilai eror (RMSE) pada metode K-NN yang semula 0.093 menjadi 0.072 setelah dioptimasi dengan algoritma PSO. Hasil ini membuktikan bahwa metode K-NN dengan optimasi PSO lebih baik dibandingkan dengan metode K-NN saja.
Biophysical potential and uncertainties of global seaweed farming
Authors: Arzeno-Soltero Isabella , Frieder Christina , Saenz Benjamin , Long Matthew , DeAngelo Julianne , Davis Steven , Davis Kristen
Published: February 2022

International climate goals require over 5 gigatons/year (Gt/year) of CO2 to be removed from the atmosphere by midcentury. Macroalgae mariculture has been proposed as a strategy for such carbon dioxide removal (CDR). However, the global potential for seaweed cultivation has not been assessed in detail. Here, we develop and use a dynamic seaweed growth model, the Global MacroAlgae Cultivation MODeling System (G-MACMODS), to estimate potential yields of four different types of seaweed worldwide, and test the sensitivity of these estimates to uncertain biophysical parameters under two nutrient scenarios (one in which the surface ocean nutrient budget is unaltered by the presence of seaweed farms, and another in which seaweed harvest is limited by nutrients that are resupplied by vertical transport). We find that 1 Gt of seaweed carbon could be harvested in 0.8% of global exclusive economic zones (EEZs; equivalent to ~1 million km2) if farms were located in the most productive areas, but potential harvest estimates are highly uncertain due to ill-constrained seaweed mortality and nitrogen exudation rates. Our results suggest that seaweed farming could produce climate-relevant quantities of biomass carbon and highlight key uncertainties to be resolved by future research.
Entering the Contact Zone? Between Colonialism, Neoliberal Resilience and the Possibility of Emancipatory Politics in Puerto Rico’s Post-Maria
Authors: Pérez-Lizasuain César J.
Published: February 2022

Undoubtedly, the colonial and neoliberal regime in Puerto Rico precedes the scourge of Hurricane Maria on September 20, 2017. Therefore, when evaluating the “responses” that followed this atmospheric disaster, it is important to consider that the political, legal and economic base for such “answers” have been articulated from a long-standing colonial-neoliberal complex in the island. In this article, the author identifies this complex with what he calls the degenerative evolution of the Commonwealth of Puerto Rico, established in 1952.
Rewiring Puerto Rico: Power and Empowerment after Hurricane Maria
Authors: Bui Lily
Published: February 2022

The 2017 Atlantic Hurricane Season brought forth multiple storms that not only stripped trees bare and dismounted roofs, but it also caught the Caribbean and Gulf Coast unprepared for the magnitude of destruction that such storms could bring, despite the best efforts of the messengers. Nearly half a year after the last hurricane season and half a year away from the onset of the next one, stories about the damage that Hurricane Irma and Maria caused have become hauntingly familiar. The stories less often told, though, are those about the long-term recovery efforts that have inevitably followed since the seas have calmed and the winds have died down.
Diálogos de (re)existencia Indígena Afro-Latinxs: Descolonialidades posibles
Authors: Bento Katucha , Sempértegui Andrea , Ruiz Ponce Heriberto , Di Paolo Louis
Published: February 2022

Este artículo es el resultado del diálogo generado en el simposio “Descolonizando el Norte Global: Afro-Latinoamérica, el Caribe y Abya Yala en diáspora” durante el Congreso Internacional de Americanistas (56º ICA 2018). Escrito en el formato de una conversación hecha a ocho manos, este texto tiene como objetivo exponer las condiciones de opresión vivenciadas por pueblos indígenas y afro-latinos desde dos posicionalidades: La primera de ellas es la voz de lxs investigadorxs inmersxs en las realidades contextuales dadas, seguidas por los comentarios de lxs investigadorxs abordando temas relacionados al racismo institucional, a la explotación y uso de la tierra y a la construcción de identidades y espacios queer desde una perspectiva descolonial. El esfuerzo de este diálogo es apuntar hacia horizontes posibles de liberación a partir de intercambios que puedan construir redes de solidaridad.
Norma Giarracca: Working Toward “A World Where Many Worlds Fit”
Authors: Lapegna Pablo
Published: February 2022

Norma Giarracca had a deep and wide trajectory as a social researcher, especially as a rural sociologist. But she mostly published in Spanish, and thus her work is not readily accessible to many readers around the world. I am deeply grateful to the compañeras and compañeros of Alternautas to offer other researchers the opportunity to access the many insights of Norma’s work. Her winding trajectory hints at her intellectual curiosity and her openness to new perspectives – she was also a fan of music and often sought to connect social research and artistic expressions, for instance, asking her son Julián Teubal to join in research trips and then using his pictures on exhibits during book presentations or academic events, or coordinating a study linking music and protest (Bidaseca, Lapegna, Mariotti, et al. 2001). Norma was deeply committed to social justice and had the utmost respect and appreciation for the “subjects” of her research. She often had brusque manners, but also an immense generosity. She fitted many worlds in the relatively small world of rural sociology and made its branches extend beyond disciplines, countries, and perspectives. She has been sorely missed since 2015, but the seeds she planted keep sprouting and growing.
Latin America, new ruralities, old and new collective action
Authors: Giarracca Norma , Giraudo María Eugenia
Published: February 2022

ECLAC characterises the six-year period from 1998 to 2003 as the “lost six-years” for the region. In this sense, they refer to the poor performance of the main economic variables and recall what was known at the end of the 1980s as the “lost decade”. The neoliberal discourse argued that, after the structural reforms put in place during the 1980s and 1990s, economies would grow and popular sectors would receive the spilling-over effects of that growth (the famous trickling down). It did not go like that: the growth rate of Gross Domestic Product (GDP) for the region shows a consistent decline since 1998, which reaches a critical point in 2002 due to the repercussions of the Argentine crisis. But this country was not the only one that showed the consequences of the “market policies” imposed by multilateral organisations and accepted by the local political leadership; Uruguay, Venezuela, Haiti and several countries in the Caribbean show negative annual rates of GDP growth and those that grow do so to very small degrees (ECLAC, 2003).
The provisional nature of science evidenced in times of pandemic
Authors: Sotério Carolina
Published: February 2022

Trust in science has been problematic over the years. The roots of the problem, in turn, are deep. For a long time, it was believed that the primary obstacle would center on the need for greater provision of scientific information to the non-specialist audience. However, this is a deficit view of the public “understanding” of science and technology, which disregards the associated historical, social and political contexts. The Digital Age has made this issue even more evident, as scientific information is everyday more rapidly accessible online. During the Covid-19 pandemic, global efforts mobilized to share information about this unprecedented scenario, bringing science to the spotlight. Consequently, the population followed every new discovery on-demand, from public policy to vaccine development challenges. This panorama puts the science trust in check again: social media gave voice not only to scientists, but also to any user to express their frustrations on this provisional moment, highlighting what was already known by academics: knowledge is constantly changing.
Code Switching In EFL Classroom: The Teachers’ Side Views
Authors: Rahmat Agus
Published: February 2022

The aims of this research were to find out the categories and the functions of code switching used by the English teacher of SMK Negeri 1 Makassar. This research employed descriptive qualitative research design. The participant was one of all the English teacher of SMK Negeri 1 Makassar, this participant is taken by using purposive sampling technique. The instruments were observation and audio recording. The results showed that (1) The three category of code switching mentioned by (Appel & Muysken, 2006) are found by the researcher. There are six examples of tag switching category, fourteen examples regarding with inter-sentential as well as there are thirteen examples of intra-sentential code switching found by the researcher in EFL classroom of SMK Negeri 1 Makassar; (2) The four functions mentioned by (Eldridge, 1996) are correct because the researcher found the example of equivalence in the extract one, floor-holding in the extract two, reiteration in the extract three and the last, conflict control in the extract four. It means that the researcher supports the theory of the expert regarding with the functions of code switching in EFL classroom.
AN ANALYSIS ILLUCOTIONARY ACT IN "OZ THE GREAT AND POWERFULL" MOVIE
Authors: Mustofia Mustofia , Putra Emil Eka
Published: February 2022

Abstrak The purpose of this research is to describe the functions of illocutionary act in “Oz The Great and Powerful” movie. This research is qualitative descriptive. The data for this research are taken from the utterances of main character. To collect the data, the researcher used observation method and non-participatory technique. To analyze the data, the researcher uses pragmatic identity method. The method of presenting the data, researcher uses informal method. From the data, the researcher found 55 utterances of illocutionary act. The researcher classifies then into five; assertive, directive, expressive, commissive and declarative. From 55 utterances of illocutionary act, the most frequent illocutionary act encountered by researcher is the directive because the main character of “Oz The Great and Powerful Movie” expresses many of his words directly, such as ordering, commanding, requesting, warning. The speech act that appears most frequently is directive illocutionary
NEW HISTORICIMS ANALYSIS IN SENSE AND SENSIBILITY NOVEL BY JANE AUSTEN
Authors: Ali Fitrianita Febrina , Otoluwa Moon Hidayati
Published: February 2022

This study focused on the use of Stephen Greenblatt's theory to analyze the novel “Sense and Sensibility” by Jane Austen. This study aims to determine the aspects of the novel by using the New Historicism approach. The method used in this research is descriptive qualitative. The data used is written data and the technique used is reading notes. Based on the results of the data analysis, the researcher found several contexts of New Historicism in the “Sense and Sensibility”, namely historical context, social context, cultural context, and biographical context. Historical context to find out how historical factors contained in the novel are then compared to non-literary texts in that era. Social context to find out how the social situation at that time. Cultural context to find out how the culture of society at that time, and biographical context to compare whether the novel describes the life of Jane Austen in the real life.
Romancing Masculinities in Utsana Phleungtham's The Story of Jan Darra: A Thai Literature
Authors: Angelianawati Desca , Darsono Darsono
Published: February 2022

The portrayal of male masculinities varies from time to time following the engulfment of gender studies. It is seen from the significant increase of the discussion related to male and masculinities. Furthermore, discussions of masculinity are linked with how a particular culture perceive masculinity. In several Thai folktales and so-considered classic literature like the Legendary Tale of Krai Thong and the Legend of Phra Chao Sua, the heroes and the warriors present themselves as masculine. Their manly assets including body and gesture have become the exploitation of the story whilst being the model of masculinity. Utsana Phleungtham’s two main male characters in the novel the Story of Jan Dara is without exception. Those heroes of the story portray male masculinities through their existence and domination. Undertaking the library studies, this article illustrates how male masculinities are depicted and why it is manifested though those characters. The findings show that the male masculinities are presented vividly in order to maintain the rooted masculine domination.