PENGEMBANGAN PEMBELAJARAN MATEMATIKA DENGAN PENDEKATAN M-APOS PADA MATERI TURUNAN FUNGSI ALJABAR DI SMA

AbstractThis study aims to determine and describe the feasibility of a mathematics learning design with the M-APOS approach on the subject derivative of algebraic functions in high school. The feasibility of the learning design was seen from the aspect of validity and practicality. The research method used was the Research and Development (R&D) method. The development model used in this study refered to the ASSURE development model which consists of five stages, including analysis of student characteristics, formulating learning objectives, selecting methods, media, and teaching materials, using media and teaching materials, and evaluation and revision. The learning design developed included RPP and LKPD following the M-APOS approach which includ LKT, LKD, and Exercises. The results of the study, including the mean score of validity, was 4 and the opinions of the validators and students who said that the learning design was practical or easy to apply in learning. So, the mathematics learning design with the M-APOS approach on the derivative material of algebraic functions in high school was feasible with valid and practical criteria for use. Keywords: Derivative of Algebraic Functions, Learning Design, M-APOS Approac

Synthesis of Mg-doped TiO2 Using a Hydrothermal Method as Photoanode on Bixin-Sensitized Solar Cell

Titanium dioxide (TiO2) with magnesium (Mg) doping for dye-sensitized solar cell (DSSC) photoanode application has been synthesized. DSSC components used in this study were photosensitizer (bixin), electrolyte (), cathode (platinum), and photoanode (Mg-TiO2). This research aims to determine the characteristics of Mg-doped TiO2 photoanode with variations in dopant concentration based on the results of XRD and DR/UV-Vis analysis, as well as to determine the maximum efficiency conversion energy of DSSC using Mg-doped TiO2 and undoped TiO2 as photoanodes. The synthesis of TiO2 and Mg-TiO2 was carried out using the hydrothermal method with variations in the concentration of Mg dopant of 0, 0.5, 1, and 2% based on the molar ratio. The presenceof 2% of Mg in anatase TiO2 paste decreased the TiO2 band gap from 3.15 to 2.60 eV. Analysis results show that adding Mg dopant decreased the crystal size. Mg dopants on TiO2 could also form new energy levels, which reduced the band gap energy of TiO2. In addition, the increased concentration of Mg dopants also shifted the absorption capacity of TiO2 from the ultra-violet (UV) wavelengths region to the visible light area. The maximum energy conversion efficiency of the DSSCs with Mg-doped TiO2 photoanode of 0.5, 1, and 2% are 0.045; 0.070, and 0.172%, respectively, where these three efficiency values are higher than undoped TiO2 (0.017%). The results proved that the presence of Mg dopants on the TiO2 photoanode can increase the efficiency of DSSC

Analisis Kualitatif Kandungan Sulfat dalam Aliran Air dan Air Danau di Kawasan Jakabaring Sport City Palembang

Analytical chemistry is one branch of chemistry in which there is a way to determine certain ion levels using selective and specific reagents. One type of ion that can be known is the sulfate ion. Sulfate ions are one of the main anions that appear in water naturally. Sulfate is one of the important ions in water availability because of its important effect on humans when it is available in large quantities. The maximum limit of sulfate in water is around 250 mg / L for human-consumed water. This study uses qualitative analysis to determine whether water in the Jakabaring Sport City Palembang region contains sulfate ions or not. Samples taken directly from five different points were reacted with HCl and BaCl2. The results obtained are the five positive water samples containing sulfate ions which are characterized by the formation of white deposits.Kimia analitik merupakan salah satu cabang ilmu kimia yang di dalamnya terdapat suatu cara untuk menentukan kadar ion tertentu dengan menggunakan pereaksi yang selektif dan spesifik. Salah satu jenis ion yang dapat diketahui kandungannya adalah ion sulfat. Ion sulfat adalah salah satu anion utama yang muncul di air secara alami. Sulfat adalah salah satu ion penting dalam ketersediaan air karena efek pentingnya bagi manusia saat ketersediaannya dalam jumlah besar. Batas maksimal sulfat dalam air sekitar 250 mg/L untuk air yang dikonsumsi manusia. Penelitian ini menggunakan analisa kualitatif untuk mengetahui air yang berada di kawasan Jakabaring Sport City Palembang mengandung ion sulfat atau tidak. Sampel yang diambil langsung dari lima titik yang berbeda direaksikan dengan HCl dan BaCl2. Hasil yang didapatkan adalah kelima sampel air positif mengandung ion sulfat yang ditandai dengan terbentuknya endapan putih

PERBEDAAN KADAR HEMOGLOBIN DAN UKURAN LINGKAR LENGAN ATAS BERDASARKAN KEJADIAN NYERI HAID PADA REMAJA PUTRI

Pada masa remaja gangguang yang sering terjadi adalah nyeri haid. Nyeri perut saat haid atau dismenore yang dirasakan oleh wanita dapat menghambat aktivitas. Angka kejadian dismenore primer di Indonesia adalah 54,89%. Tujuan penelitian ini untuk mengetahui perbedaan kadar hemoglobin dan ukuran lingkar lengan atas berdasarkan kejadian nyeri haid pada remaja putri di MTsS Pesantren Shine Alfalah. Penelitian ini menggunakan metode analitik dengan desain cross sectional. Sampel pada penelitian ini adalah siswi MTsS Pesantren Shine Alfalah Padang pada bulan September – November 2023 dengan teknik pengambilan sampel menggunakan purposive sampling berjumlah 74 orang. Peneliti menggunakan kuesioner menstruasi, melakukan pemeriksaan hemoglobin dan mengukur LiLA responden. Hasil penelitian diolah dengan uji statistik T independent. Penelitian ini didapatkan hasil bahwa 17 orang (23%) mengalami nyeri haid, rerata kadar hemoglobin responden adalah 13,565 g/dl, dan rerata ukuran LiLA responden adalah 21,628 cm. Hasil uji T independent didapatkan bahwa terdapat perbedaan kadar hemoglobin antara kelompok yang mengalami nyeri haid dengan yang tidak mengalami nyeri haid (p value = 0,000). Hasil lain didapatkan bahwa terdapat perbedaan ukuran LiLA antara kelompok yang mengalami nyeri haid dengan yang tidak mengalami nyeri haid (p value = 0,000). Dapat disimpulkan bahwa terdapat perbedaan kadar hemoglobin dan ukuran lingkar lengan atas berdasarkan kelompok nyeri haid pada remaja putri di MTsS Pesantren Shine Alfalah Padang

Peran dan Fungsi Yayasan At-Thoharoh dalam Mengembangkan Keagamaan Masyarakat di Nagori Manik Maraja

This study aims to find out how the role of the At-Thoharoh Manik Maraja Foundation in managing madrasas, especially in achieving. In addition, this study also wants to know how the function of the foundation, especially in the religious field of madrasas managed by the foundation. Foundations have an important role in people's lives, namely helping people to improve their welfare through education. In addition, the existence of a foundation can help achieve community goals in the social field, both humanitarian and religious. A foundation may earn profits by conducting various businesses, but the profits obtained may only be used for social purposes, not for personal interests. This study uses a qualitative approach. The results of the study indicate that the role of the Darul Irfan foundation in providing education in At-Thoharoh is quite good, although not optimal. The function of fostering the foundation has been carried out, especially in religious guidance, managerial guidance to the head and also financial management. In addition to coaching, the foundation also helps in resolving conflicts that occur between individuals and between units/foundations. The Foundation already has a clear mechanism for conflict resolution

PENGARUH PEMBIAYAAN MODAL KERJA TERHADAP PENDAPATAN USAHA NASABAH (PADA PT. BNI SYARIAH KANTOR CABANG PALEMBANG) (Skripsi)

Pembiayaan Modal Kerja merupakan suatu pembiayaan untuk memenuhi berbagai macam kebutuhan, antara lain yaitu untuk peningkatan produksi, baik secara kuantitatif maupun kualitatif, kemudian untuk keperluan perdagangan atau peningkatan utility of place dari suatu barang. Rasio keuntungan (pendapatan) nasabah kita bisa menilai dengan melakukan perhitungan dengan menggunakan rumus-rumus pendapatan. Dengan demikian penulis mengadakan penelitian lebih lanjut dengan judul “Pengaruh Pembiayaan Modal Kerja Terhadap Pendapatan Usaha Nasabah Pada PT. BNI Syariah Kantor Cabang Palembang”. Tujuan penelitian yang diangkat dalam tema di atas adalah untuk mengetahui apakah pembiayaan modal kerja berpengaruh terhadap pendapatan usaha nasabah pada PT. BNI Syaraih Kantor Cabang Palembang. Dan untuk mengetahui pengaruh antara kedua variabel tersebut menggunakan rumus regresi linier sederhana dihitung dengan SPSS. Hasil analisis menunujukkan bahwa ada pengaruh pembiayaan modal kerja terhadap pendapatan usaha nasabah pada PT. BNI Syariah Kantor Cabang Palembang dan dengan penyaluran pembiayaan modal kerja kepada masyarakat PT. BNI Syariah Kantor Cabang Palembang telah menjalankan fungsinya sebagai lembaga intermediasi keuangan dan meningkatkan kesejahteraan ekonomi umat Islam terutama masyarakat ekonomi lemah yang kebanyakan berada di pedasaan

Pengaruh Layanan Bimbingan Kelompok Dengan Teknik Kelompok Sebaya Terhadap Konsep Diri Sosial Remaja

The background of this study was the low social self-concept of adolescents in Al-Fida Orphanage Bengkulu. This research aims to determine the effect of group guidance services with peer group techniques on adolescent social self-concept. The research method used quasi-experimentation with non equivalen pre-test post-test control groups design. The study sample consisted of 20 adolescents divided into 10 expression groups and 10 control groups. Sampling techniques using purposive sampling. Data collection using self-concept questionnaires. The data were analyzed with the Mann Withney test using SPSS Version 20.0. The findings suggest that group guidance services with peer group techniques influence the social self-concept of adolescents

Pengaruh Layanan Bimbingan Kelompok dengan Teknik Self-Management Terhadap Intensitas Kecanduan Game

This study aims to reduce game addiction of class XI IPS students of SMA Negeri 1 Bengkulu Tengah through group guidance services with self-management techniques. These services and techniques aim to assist students in managing their own behavior to change it, especially in game addiction. This study uses a quasi-experimental research method (quasi-experimental). The population in this study were students of SMA Negeri 1 Bengkulu Tengah. Sampling using purposive sampling technique with one group consisting of 10 people. The selection is based on the criteria for game addiction which is in the high category. Data collection using a game addiction questionnaire. The data analysis technique used descriptive percentage. The results of the analysis obtained that the average value of students' game addiction for the pretest was 108.90 in the high category. While the average value of student game addiction for the posttest is 74.00 in the low category. Thus, descriptively it can be said that there is a decrease in the average value of game addiction between the pretest and posttest. To test the hypothesis, the Mann Withney test was used. The results of the study obtained that group guidance with self-management techniques was very effective in reducing the intensity of game addiction in students

Pengaruh Layanan Bimbingan Kelompok “Menggunakan Teknik Problem Solving“Terhadap Kesiapan Belajar di Masa Pandemi Pada Siswa Kelas XI IPS 2 SMAN 9 Kota Bengkulu

This study aims to determine the level of student learning readiness in "pandemic period before (pretest) and after (posttest) group guidance services are given using problemsolving to determine the effect of group guidance services using techniques  solving on student readiness to learn during the pandemic. The method used in this study was an experimental method in the form of a one-"group pretest-posttest. The population in this study was all students of class XI IPS 2 "SMAN 9 Bengkulu City, totaling 26 students. The sample was determined using atechnique random with a total of 12 students in class XI IPS 2. After the data was collected and analyzed using the Wilcoxon test. The research results are as follows: 1. "students before being given group guidance services "using problem solving , there is 1 student with "low categoryein .techniques 2 There is a significant effect of group guidance services using problem solving on learning readiness during the "in class XI IPS 2 SMAN 9 Bengkulu City

Investigating EFL students’ linguistic problems using Grammarly as automated writing evaluation feedback

A plethora of previous studies has shown that corrective feedback can benefit students to progress in their learning. Due to technological advancement, there is a need to investigate the profile of corrective feedback to students’ writing via automated writing evaluation (AWE), particularly in the Indonesian higher education context. Therefore, this research aims to employ an AWE platform, Grammarly, to investigate the Indonesian English as a foreign language (EFL) students’ writing profiles in spelling, grammar, punctuation, enhancement suggestion, sentence structure, and style check. This ex post facto study explored the assignment written by 54 fourth-semester English department students enrolled in an academic writing course at an Indonesian university. The students’ writing profiles were classified, identified, and categorized using the Grammarly platform. Descriptive statistics were used to obtain the average, standard deviation, and significant differences according to the writing profiles between male and female students. The result stated that grammar is the major problem possessed by students. Furthermore, teachers are expected to provide online corrective feedback for students in the Academic Writing course learning process