The Situations That Can Bring Reflective Thinking Process In Mathematics Learning

This paper focuses on situations that can bring reflective thinking process in mathematics learning. Reflective thinking can be identified from the phases of the reflective cycle of teaching, the phases of reflection, and metacognitive activities designed for learning. In order to stimulate reflective thinking process is good to consider the prior knowledge and intuition student owned. Relevant prior knowledge and intuition is useful in solving problems to create the situations that can bring reflective thinking process namely, the selection of action or alternative solutions, and decision-making regarding actions or solutions created or obtained. Key Words: Reflective Cycle, Reflective Phase, Metacognitive Activity, Prior Knowledge, Intuition, Selecting Action, Decision Makin

PENINGKATAN KINERJA KOMPOR SURYA TIPE KOTAK DENGAN PENAMBAHAN CERMIN REFLEKTOR

Pengujian ini bertujuan untuk mengetahui pengaruh dari penambahan cermin reflektor terhadap kinerja dari kompor surya tipe kotak. Metode yang digunakan dalam pengujian ini adalah eksperimental. Pengujian dilakukan di Laboratorium Konversi Energi Teknik Mesin Universitas Tridinanti Palembang. Penelitiaan dilakukan pada kompor surya tipe kotak dengan 3 cermin reflector. Kompor surya ini di uji untuk memanaskan air sebanyak 0,7 Liter air. Pengujian yang dilakukan untuk mendapatkan kinerja kompor adalah dengan menggunakan satu cermin, kemudian berikutnya dilakukan dengan penambahan 2 cermin pada posisi kiri dan kanan kompor surya. Dari hasil pengujian diperoleh hasil untuk kompor surya cermin tunggal diperoleh temperatur yang tertinggi dalam proses pemanasan air yaitu 80.2 oC, daya kompor sebersar 486.66 Watt. Sedangkan pengujian dengan penambahan cermin temperature yang tercapai adalah 83.4 oC dan daya kompor 518.02 Watt. Efisiensi kompor tertinggi diperoleh untuk cermin tunggal adalah sebesar 9,89 %, sedangkan efisiensi dengan penambahan cermin sebesar  17.36 %

MENINGKATKAN KEMAMPUAN DAN DISPOSISI BERFIKIR REFLEKTIF MATEMATIS MAHASISWA DENGAN PENDEKATAN METAKOGNITIF

Penelitian ini bertujuan untuk menganalisis peningkatan kemampuan berpikir reflektif matematis (KBRM) dan disposisi berpikir reflektif matematis (DBRM) sebagai dampak dari penerapan pembelajaran dengan pendekatan metakognitif. KBRM diidentifikasi dengan enam indikator berpikir reflektif yaitu indikator mendeskripsikan, mengidentifikasi, menginterpretasi, mengevaluasi, memprediksi, dan menyimpulkan. Indikator DBRM diadaptasi dari Sumarmo (2013). Pembelajaran dengan pendekatan metakognitif yang diterapkan adalah pembelajaran dengan mengaktivasi lima kesadaran kognitif yaitu mengaktivasi need awareness, strategy awareness, process awareness, evaluation awareness, dan solution awareness. Proses mengaktivasi kesadaran dilakukan dengan memberikan pertanyaan-pertanyaan yang mengaitkan dengan prior knowledge mahasiswa baik secara lisan maupun tulisan dan merangsang intuisi mahasiswa untuk melakukan tindakan dalam memahami atau menyelesaikan masalah. Peningkatan KBRM dan DBRM ditinjau dari Jalur masuk kuliah (PMDK, SNMPTN, dan Ujian Mandiri) dan kemampuan pengetahuan prasyarat (KPP). Subjek penelitian adalah mahasiswa semester VII Jurusan Pendidikan Matematika pada salah satu perguruan tinggi islam di Jakarta. Pemilihan subjek penelitian diakukan secara purposif sebanyak 60 mahasiswa yang terdiri dari satu kelas eksperimen dan satu kelas kontrol yang masing-masing kelas terdiri dari 30 mahasiswa. Kelas eksperimen diberi pembelajaran dengan pendekatan metakognitif (PM) dan kelas kontrol diberi pembelajaran dengan pendekaan konvensional (PK). Instrumen tes digunakan untuk mengukur KBRM sebanyak enam item soal. Instrumen non tes digunakan untuk mengukur DBRM sebanyak 13 indikator dengan 36 item pernyataan. Analisis data yang digunakan adalah ANAVA 2 jalur, Uji-t, Uji Kruskal-Wallis, dan Uji Mann Whitney. Hasil penelitian menunjukkan bahwa: (a) Peningkatan dan pencapaian KBRM mahasiswa pada PM lebih tinggi daripada peningkatan dan pencapaian KBRM mahasiswa yang pembelajarannya konvensional berdasarkan jalur masuk kuliah dan secara keseluruhan; (b) Peningkatan dan pencapaian KBRM mahasiswa pada kelompok PM lebih tinggi daripada peningkatan dan pencapaian KBRM mahasiswa yang pembelajarannya konvensional berdasarkan taraf KPP dan secara keseluruhan; (c) Peningkatan dan pencapaian DBRM mahasiswa kelompok PM lebih tinggi daripada peningkatan dan pencapaian DBRM mahasiswa kelompok konvensional berdasarkan taraf KPP dan secara keseluruhan. (d) Peningkatan dan pencapaian DBRM mahasiswa kelompok PM lebih tinggi daripada peningkatan dan pencapaian DBRM mahasiswa yang pembelajarannya konvensional berdasarkan jalur masuk kuliah dan secara keseluruhan. (e) Tidak terdapat interaksi baik antara pendekatan pembelajaran dengan KPP maupun dengan Jalur Masuk terhadap peningkatan dan pencapaian KBRM dan DBRM mahasiswa ---; This study aimed to analyze the increased of mathematical reflective thinking skills (MRTS) and mathematical reflective thinking disposition (MRTD) as a result of the application of metacognitive approach (MA) and conventional approach (CA). MRTS are identified by six indicators that is, to describe, to identify, to interpret, and to evaluate, to predict, and to infer. The MRTD indicators is adapted from Sumarmo (2013). Learning with metacognitive approach is the learning that applyed by activating five cognitive awareness that is, activates need awareness, strategy awareness, process awareness, evaluation awareness, and solution awareness. The process of activating consciousness done with provides questions that associate with student’s prior knowledge both verbally and in writing, and stimulate student’s intuition to take action in understanding or solving the problems. The Increased MRTS and MRTD viewed from types of admission system and prerequisite knowledge ability (PKA). The type of admission system based on three categories, namely, Selection of Interest and Academic Acheavement (SIAA), National Selection of State Universities (NSSU), and Independent Student Admission System (ISAS). The level of prerequisite knowledge ability (PKA) viewed by three categories: low, medium, and high based on the prerequisite material ability test. The subject of research were students on semester VII of mathematics education department of Islamic university in Jakarta. The instrument used to measure the MRTS as much as six items. The instrument used to measure the MRTD was the scale with 13 indicators and 36 items statement. The data analysis used was two-way ANOVA, t-test, Kruskal-Wallis test, and Mann Whitney Test. The results showed that: (a) The increasing and achievement of student’s MRTS in the group of MA is higher than the increase of student’s MRTS whose learning was conventionally; (b) The Increasing and acheavement of student’s MRTS in the group of MA overall is higher than the increasing and achievement of student’s MRTS in learning with CA based on the type of admission system and on the whole. An increased in the MRTS on ISAS did not differ between the group MA and CA. (c) The increased of student’s MRTD on the group of MLA was better than the increased in student’s MRTD on conventional group by PKA and the overall level. (d) The increased of student’s MRTD on MA group of students was better than the increased of student’s MRTD in conventional learning based on the type of admission system. (e) There is no interaction between the learning approaches with PKA and the type of admission system to the increased student’s MRTS and MRTD both in terms of reflective level and overal

Tanggungjawab Notaris terhadap Kebenaran Data dalam Pembuatan Akad di Perbankan Syariah di Indonesia

Notaris adalah pejabat umum yang diangkat oleh pemerintah untuk membantu masyarakat umum dalam hal membuat perjanjian-perjanjian yang ada atau timbul dalam masyarakat. Kewenangan Notaris juga menyangkut dengan pembuatan akad yang berkaitan dengan perbankan syariah, baik akad pembiayaan maupun akad lainnya yang merupakan produk pada perbankan  syariah. oleh karena itu dalam penelitian ini bertujuan untuk menjawab bagaimanakah tanggungjawab Notaris untuk memastikan keabsahan data dan dokumen yang diberikan oleh para pihak dalam pembuatan akad di perbankan syariah di Indonesia. Tugas dan tanggungjawab Notaris sebagai pejabat publik yang berwenang membuat akta atau akad dan atau perjanjian-perjanjian yang masuk dalam kewenangannya tidak dapat dimintai pertanggungjawabannya berkaitan dengan keterangan dan data serta dokumen yang diberikan pada Notaris, karena tugas Notaris hanya mencatat keterangan para pihak yang menghadap yang dituangkan dalam akta atau akad, termasuk akad dalam petbankan syariah di Indonesia

Effects of moringa oleifera supplementation combined with resistance exercise on immune responses and bone turnover markers among young men

INTRODUCTION: Proper immune function and healthy bone is required for maintaining daily routine of an individual. To date, no study has been carried out to investigate possible benefits of Moringa oleifera supplementation combined with resistance exercise on immune responses and bone turnover markers among young men. PURPOSE: Therefore, the present study was carried out to determine the effects of Moringa oleifera supplementation combined with resistance exercise (MOEx) compared to Moringa oleifera supplementation alone (MO), resistance exercise alone (Ex) and control (C) groups on immune responses and bone turnover markers among young men. METHODS: Forty sedentary young men (age: 22.1 ± 1.3 years old) were recruited and were randomised into four separate groups: placebo without exercise control (C), resistance exercise alone (Ex), Moringa oleifera supplementation alone (MO) and resistance exercise with Moringa oleifera supplementation (MOEx). Participants in the Ex and MOEx groups performed resistance exercise 3 times per week for 6 weeks which consisted of 10 different exercises. Participants were required to perform 3 sets of 10-15 repetitions of resistance exercise per set. Participants in the MO and MOEx groups consumed Moringa oleifera (300 mg of 100% Moringa oleifera leaf powder each capsule) and participants in the C and Ex groups consumed placebo twice daily for 6 weeks. Participants’ body height, weight, blood pressure andresting heart rate were measured at pre- and post-tests. Blood samples were collected at pre- and post-tests after an overnight fast. Blood samples were used to analyse total WBC, lymphocytes, monocyte, T lymphocyte (CD3+, CD4+ and CD8+) and B lymphocyte (CD19+) counts. Blood samples were also used to analyse concentrations of alkaline phosphatase (ALP), osteocalcin (OC) and cross-linked C-terminal telopeptide of collagen alpha-1 (1CTP). A mixed analysis of variance (ANOVA) was performed to determine the significance of the differences between and within groups. RESULTS: It was found that combination of resistance exercise and Moringa oleifera did not significantly (p > 0.05) induce better effects on immune responses and bone turnover markers concentration compared to control, resistance exercise alone, and MO supplementation alone. CONCLUSION: Six weeks of combined MO supplementation and resistance exercise did not significantly enhance immune responses and bone turnover markers among sedentary young men

PROBLEM BASED AND METACOGNITIVE LEARNING TO IMPROVE MATHEMATICAL REFLECTIVE THINKING SKILLS

This study was conducted to determine the student’s reflective thinking skills who are taught with problem-based learning and metacognitive; to know the mathematical reflective thinking skills of students who are taught by conventional learning; to identify the difference of increased reflective thinking skills among students that taught with problem-based learning and metacognitive and students who are taught by conventional learning. The analytical method used is the means difference testing using the Mann Whitney test and t-test. Research subjects were students of the fifth semester of mathematics education in the course Structure of Algebra I and the seventh semester student in the course Mathematical Statistics II. The results showed that the Structure of Algebra I course, student’s reflective thinking skills with problem-based learning has implications for the development of mathematical ideas to solve the problem: in the course of Mathematical Statistics II, student’s reflective thinking skills has implication on efficiency and simplicity in a solving problems, and mathematical reflective thinking skills approach to student learning with problem-based learning in the Structure of Algebra I course is better than mathematical reflective thinking skills of students in conventional learning approach. Similarly, the mathematical reflective thinking skills that students are learning the metacognitive approach the subject of Mathematical Statistics II better than reflective mathematical thinking skills of students in conventional learning approach

Biohydrogen purification using methyldiethanolamine and caustic in a two stage absorption system

As the research on biohydrogen production is growing, there is a need to explore the most suitable way to purify the biogas produced from the fermentation process so that pure biohydrogen can be obtained. The common biohydrogen gas composition produced from biological process is mainly hydrogen (H2) and carbon dioxide (CO2). The presence of CO2 in biohydrogen will affect its application if biohydrogen is used in fuel cell application. In this work, solvent absorption was selected due to its simplicity and low cost. The CO2 removal was performed by using two stage solvent absorption at which the activated methyldiethanolamine (MDEA) was used in the first stage and caustic (NaOH) in the second stage. The MDEA was activated by adding piperazine (PZ) into the MDEA solution. It was added to improve the reaction between CO2 and MDEA. The operating pressure and temperature were 1 bar and 33°C respectively. The simulated untreated biohydrogen gas contained 50 mol% of H2 and 50 mol% of CO2 . At first, 40 wt% MDEA was activated with different concentration of PZ and evaluated. It was found that 6 wt% of PZ was required to fully activate the 40 wt% MDEA. Next, the CO2 removal was improved by implementing an improvised gas distributor at the first stage. Lastly, the CO2 removal was further improved by utilizing a wire mesh packing at the first stage as to improve the contact area between the gas and the chemical solvent. At the same time caustic stage containing 20 wt% NaOH was added as the second stage. By doing so, the highest CO2 removal achieved in this study at the first stage was 86% and 99.59% at the second stage, producing treated biohydrogen gas with purity of >99 mol%. Hence, this system has great potential to be used as a proper CO2 removal system for biohydrogen gas produced by fermentation process

Strategi Pemasaran Jasa Pendidikan Melalui Program PPDB Indent di SD IT Banten Islamic School

ABSTRACTThis research discusses marketing strategies to increase new student participation through the Indent New Student Admission Program (PPDB) at SDIT Banten Islamic School. The research method uses a descriptive qualitative approach by exploring effective marketing strategies to attract prospective students and parents. This research aims to provide guidance for SDIT Banten Islamic School in designing effective marketing strategies to increase brand awareness, attract prospective students, and increase participation in the PPDB Indent Program. The practical implications of this research are expected to help school managers in achieving success in new student enrollment as well as strengthening SDIT Banten Islamic School's position in the education domain. The strategic measures identified include the establishment of strong branding through the identification of school values, the use of social media and digital platforms to expand reach, partnerships with other educational institutions to introduce the school, the implementation of special events such as open days and seminars, and the use of testimonials and recommendations from students and parents.Keywords: strategy, marketing, education services ABSTRAKPenelitian ini membahas strategi pemasaran untuk meningkatkan partisipasi siswa baru melalui Program Penerimaan Peserta Didik Baru (PPDB) Indent di SDIT Banten Islamic School. Metode penelitian menggunakan pendekatan deskriptif kualitatifdengan menggali strategi pemasaran yang efektif untuk menarik minat calon siswa dan orang tua. Penelitian ini bertujuan untuk memberikan panduan bagi SDIT Banten Islamic School dalam merancang strategi pemasaran yang efektif guna meningkatkan kesadaran merek, menarik minat calon siswa, dan meningkatkan partisipasi dalam Program PPDB Indent. Implikasi praktis dari penelitian ini diharapkan dapat membantu pengelola sekolah dalam meraih keberhasilan dalam penerimaan siswa baru serta memperkuat posisi SDIT Banten Islamic School dalam ranah pendidikan. Langkah-langkah strategis yang teridentifikasi termasuk penetapan branding yang kuat melalui identifikasi nilai-nilai sekolah, penggunaan media sosial dan platform digital untuk memperluas jangkauan, kemitraan dengan lembaga pendidikan lainnya untuk memperkenalkan sekolah, pelaksanaan event khusus seperti hari terbuka dan seminar, serta penggunaan testimoni dan rekomendasi dari siswa dan orang tua.Kata kunci: strategi, pemasaran, jasa pendidika