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DEKOLORISASI SENYAWA AZO LIMBAH REMAZOL GOLDEN YELLOW OLEH BIOADSORBEN ECENG GONDOK (EICHHORNIA CRASSIPES) Fitriani, Ika Nur; Puspitasari, Anggi Ristiyana; Amelia, Rizki Nor
Walisongo Journal of Chemistry Vol 2, No 2 (2019): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1054.317 KB) | DOI: 10.21580/wjc.v2i2.6023

Abstract

Telah dilakukan penelitian tentang adsorbsi senyawa azo Remazol Golden Yellow dari limbah cair zat warna sintetis menggunakan adsorben dari eceng gondok (Eichhornia crassipes). Penelitian ini bertujuan untuk mengetahui kondisi optimal eceng gondok (Eichhornia crassipes) sebagai bioadsorben limbah zat warna Remazol Golden Yellow dan mengetahui kadar ppm Remazol Golden Yellow maksimum dalam limbah zat warna sintetis yang dapat diserap oleh bioadsorben eceng gondok (Eichhornia crassipes). Subyek penelitian adalah eceng gondok yang teraktivasi NaOH 2% dengan waktu perendaman 24 jam. Obyek penelitian adalah efisiensi adsorpsi eceng gondok (Eichhornia crassipes) terhadap zat warna sintetis-reaktif Remazol Golden Yellow. Variabel bebas yang dipakai adalah variasi massa. Daya adsorbsi ditentukan dengan dengan membandingkan konsentrasi Remazol Golden Yellow sebelum dan setelah adsorbsi. Hasil penelitian menunjukkan bahwa semakin besar massa bioadsorben, efisiensi adsorbsi juga akan semakin besar dan adsorbsi optimum variasi massa Remazol Golden Yellow diperoleh pada massa adsorben 2,5 gram/100 mL dengan efisiensi adsorbsi 74,767%
IDENTIFIKASI ITEM FIT DAN PERSON FIT DALAM PENGUKURAN HASIL BELAJAR KIMIA Nor Amelia, Rizki
Jurnal Ilmiah WUNY Vol 3, No 1 (2021): Jurnal Ilmiah WUNY
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.747 KB) | DOI: 10.21831/jwuny.v3i1.40703

Abstract

Tes kimia buatan guru yang berkualitas sangat dibutuhkan mengingat keputusan yang diambil dari hasil tes tersebut berdampak pada siswa. Untuk memenuhi hal tersebut, model Rasch menawarkan statistik uji yang berperan penting dalam konstruksi pengujian yang berkaitan dengan masalah evaluasi dan pemilihan item serta dalam pengambilan keputusan terhadap skor tes yang dihasilkan. Oleh sebab itu, penelitian ini dilakukan dengan tujuan untuk mengidentifikasi item fit dan person fit dalam pengukuran hasil belajar kimia menggunakan model Rasch. Data yang berupa respon multiple choice dari 40 item penyusun instrumen tes kimia buatan guru diambil dengan teknik dokumentasi dan dianalisis menggunakan Winsteps Rasch Software versi 3.73. Hasil analisis menyimpulkan bahwa semua item penyusun instrumen tes kimia buatan guru terbukti fit model. Sementara itu, dari 356 siswa SMA di Kota Yogyakarta yang menjadi responden penelitian, 18 siswa diantaranya teridentifikasi sebagai person misfit yang sebaiknya diperiksa lebih lanjut untuk mendapatkan bimbingan guru.
The Response Patterns of the Career Interest Instrument Based on Holland’s Theory Farida Agus Setiawati; Yulia Ayriza; Endah Retnowati; Rizki Nor Amelia
ANIMA Indonesian Psychological Journal Vol. 32 No. 3 (2017): ANIMA Indonesian Psychological Journal (Vol. 32, No. 3, 2017)
Publisher : Laboratory of General Psychology, Faculty of Psychology, Universitas Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1117.47 KB) | DOI: 10.24123/aipj.v32i3.628

Abstract

This study aims to identify: patterns of responses, the item parameters, and the possibility of gender bias in the career interest instrument developed by the authors based on the Holland’s theory. The sample of this study was 576 elementary students in Daerah Istimewa Yogyakarta who were recruited using the cluster random sampling method. Two parameters were employed to analyze the response patterns using BILOG program. The results were: (1) three items have inappropriate response patterns to the model; (2) all items of the career interest instrument showed good item parameter criteria; and (3) ten items were identified containing Differential Item Functioning (DIF) in relation to gender bias as shown by the Item Characteristic Curve (ICC). The implications of this study are this instrument can be used in assesing career interest of students and the information of biased items may be considered in the selection of careers for male and female students, including in scoring and interpretation.
Chemistry Learning Outcomes Assessment: How is The Quality of The Tests Made by The Teacher? Rizki Nor Amelia; Anggi Ristiyana Puspita Sari; Sri Rejeki Dwi Astuti
Journal of Educational Chemistry (JEC) Vol 3, No 1 (2021)
Publisher : Chemistry Education Department

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/jec.2021.3.1.6582

Abstract

The teacher-made chemistry test must have a good quality, due to the decision taken from the tests has an impact on the students. Therefore, the purpose of the research is to explore the quality of teacher-made chemistry tests such as item fit and person fit, item difficulty, and test reliability. The sample consisted of 356 senior students from senior high schools in Yogyakarta that were selected by cluster random sampling technique. The research used the teacher-made chemistry test consisted of 40 multiple choice items which were collected using documentation technique. Data were analyzed with Rasch Model using Winsteps 3.73 version. The result showed that all items in the teacher-made chemical test were proven to have good quality (fit model, good item difficulty, and good test reliability). Moreover, 18 students were identified as misfit persons. From the findings, the test can be used to assess the students’ learning outcomes, especially for the try-out of the final exam in senior high school. Besides, the students identified as person misfits should be further examined and receive teachers’ guidance.
Chem is Fun: Animation Learning Media Based on Quantum Learning on Atomic Structure Sri Rejeki Dwi Astuti; Anggi Ristiyana Puspita Sari; Rizki Nor Amelia
Journal of Educational Chemistry (JEC) Vol 3, No 1 (2021)
Publisher : Chemistry Education Department

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/jec.2021.3.1.6583

Abstract

Good learning media are media that can facilitate students to understand the material. The selection of learning media must be in accordance with the characteristics of the teaching material. To facilitate explaining the atomic structure material that is abstract, we need a medium that can realize the material. This study aimed to develop an interactive animation learning media Chem is Fun based on quantum learning and determine the quality of the product. The development model used was the ADDIE model by adapting the development procedures, namely the analysis, design, development, and evaluation stages. This study involved one media expert, one material expert, three peer reviewers, and five reviewers to assess product quality. The instrument used in this study consisted of an advice sheet and a questionnaire. The results of the study state that the learning media product Chem is Fun based on quantum learning has good quality, so it can be used as a learning medium to help students' learning process on atomic structure material.
Dekolorisasi Senyawa Azo Limbah Remazol Golden Yellow oleh Bioadsorben Eceng Gondok (Eichhornia Crassipes) Ika Nur Fitriani; Anggi Ristiyana Puspitasari; Rizki Nor Amelia
Walisongo Journal of Chemistry Vol 2, No 2 (2019): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v2i2.6023

Abstract

Telah dilakukan penelitian tentang adsorbsi senyawa azo Remazol Golden Yellow dari limbah cair zat warna sintetis menggunakan adsorben dari eceng gondok (Eichhornia crassipes). Penelitian ini bertujuan untuk mengetahui kondisi optimal eceng gondok (Eichhornia crassipes) sebagai bioadsorben limbah zat warna Remazol Golden Yellow dan mengetahui kadar ppm Remazol Golden Yellow maksimum dalam limbah zat warna sintetis yang dapat diserap oleh bioadsorben eceng gondok (Eichhornia crassipes). Subyek penelitian adalah eceng gondok yang teraktivasi NaOH 2% dengan waktu perendaman 24 jam. Obyek penelitian adalah efisiensi adsorpsi eceng gondok (Eichhornia crassipes) terhadap zat warna sintetis-reaktif Remazol Golden Yellow. Variabel bebas yang dipakai adalah variasi massa. Daya adsorbsi ditentukan dengan dengan membandingkan konsentrasi Remazol Golden Yellow sebelum dan setelah adsorbsi. Hasil penelitian menunjukkan bahwa semakin besar massa bioadsorben, efisiensi adsorbsi juga akan semakin besar dan adsorbsi optimum variasi massa Remazol Golden Yellow diperoleh pada massa adsorben 2,5 gram/100 mL dengan efisiensi adsorbsi 74,767%
Item Psychometric Property of Marital Quality Scale of Javanese People Using Rasch Model Farida Agus Setiawati; Rizki Nor Amelia; Siti Rohmah Nurhayati
Journal of Educational, Health and Community Psychology Vol 11 No 2 June 2022
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jehcp.v11i2.23409

Abstract

The measurement of marital quality has been done in many countries including Indonesia. This article described the characteristics of the item parameter endorsement index and item fit model in the data as the results of measurement of marital quality of Javanese people. The 420 couples (N = 840) from Daerah Istimewa Yogyakarta, Solo, Banyumas, and Pekalongan involved this research. The data collected were analyzed using the Rasch model with the Quest program. In general, the endorsement index moves higher as the category increases, and there were four items from the dimension of relation quality and twelve items the dimensions of well-being quality that were misfit model. These indicated that the items did not really measure the latent construct desired and need to be removed or reviewed.
DETEKSI BIAS GENDER PADA INSTRUMEN EVALUASI BELAJAR KIMIA DENGAN METODE MANTEL-HAENZEL Rizki Nor Amelia; Sri Rejeki Dwi Astuti; Anggi Ristiyana Puspita Sari
JURNAL TARBIYAH Vol 29, No 2 (2022)
Publisher : UIN Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/tar.v29i2.1781

Abstract

This study aims to explore psychometric characteristics and detect whether the teacher-made chemistry learning evaluation instrument contains item bias that can benefit students of a certain gender. The research sample was 358 students of class XII SMA in Yogyakarta who were taken by cluster random sampling then the answer were analyzed by Winsteps Rasch Software 3.73. In general, it can be concluded that the teacher-made chemistry learning achievement instrument is good in terms of the reliability coefficient, the distribution of the difficulty level of the items, the majority of which are in the medium category, and only one that detected as misfit item. The results of the analysis using the Mantel-Haenszel method showed that three item was biased and two of them favored male students. With the detection of bias item, it indicates that follow-up from the teacher is needed to improve these items so that the principle of test fairness can be enforced.
INSTRUMEN PENILAIAN TERINTEGRASI : PENGUKURAN KEMAMPUAN BERPIKIR KRITIS DAN KETERAMPILAN SAINS SISWA PADA MATERI LARUTAN ELEKTROLIT DAN NONELEKTROLIT Sri Rejeki Dwi Astuti; Anggi Ristiyana Puspita Sari; Rizki Nor Amelia; Karlinda Karlinda
JURNAL TARBIYAH Vol 29, No 2 (2022)
Publisher : UIN Sumatera Utara Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/tar.v29i2.1858

Abstract

This study aimed to explore the characteristics of the tests used in measuring students' abilities such as item fit, item difficulty level, and test reliability and to measure students’ ability in electrolyte test takers' reliability, and person misfit. This research involved 260 students from two senior high schools in Bantul, Yogyakarta. The research instruments was integrated assessment instrument for electrolyte and nonelectrolyte solution matter consisted of 8 essay question. The data were analyzed with Rasch model using Winstep software version 3.73. The results revealed that all items on the integrated assessment instrument have been proven to be fit with Rasch model, have good test reliability, and have good difficulty level parameters. Moreover, students' abilities were obtained very diverse, i.e. very low, low, medium, high and very high abilities. Meanwhile, the person reliability were very low and 48 students were identified as person misfit . Thus, further examination can be conducted, so that students who are identified as misfit s can obtain guidance from the teacher.
Pengembangan Angket Respon Mahasiswa Terhadap Penggunaan Laboratorium Virtual Selama Pandemi Covid-19 Sri Rejeki Dwi Astuti; Rizki Nor Amelia; Anggi Ristiyana Puspita Sari; Karlinda
Jurnal Ilmiah Kanderang Tingang Vol 14 No 1 (2023): Jurnal Ilmiah Kanderang Tingang
Publisher : FKIP Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/jikt.v14i1.195

Abstract

In the covid-19 pandemic, teaching and learning activities was conducted online. Thus, we need an application that can support distance learning, including the practicum process in the laboratory. Virtual laboratory is considered to be the main solution in replacing the learning process in the laboratory. However, by utilizing virtual laboratory in the learning process did not necessarily hone students' practical skills. Therefore, we aimed to develop and to explore the validity and reliability of Student responses questionnaire towards the virtual laboratories during the Covid-19 pandemic. This research was research and development adopting the 4D model. This research involved 2 evaluation experts and 63 students of chemistry department of UNY selected based on purposive sampling technique. The research instruments were content validation sheets for experts and developed questionnaires for construct validation. The data were analyzed with descriptive qualitative technique to describe product development process data, Aikens' V analysis to analyze content validity data, Exploratory Factor Analysis to analyze construct validity data, and Cronbach Alpha analysis to analyze questionnaire reliability using SPSS 20. The results revealed that the student response questionnaire towards virtual laboratory has been successfully developed using the 4D model consisting of 11 statements. All statements in the questionnaire were proved valid based on construct validity and reliable. From the findings, the student response questionnaire is ready to be used for further research related to student responses to learning media.
Co-Authors Abdul Jabbar Alma’ruf, Fattah Amnan Haris Amnan Haris Andin Vita Amalia Andin Vita Amalia, Andin Vita Anggi Ristiyana Puspita Sari Anggi Ristiyana Puspita Sari Anggi Ristiyana Puspita Sari Anggi Ristiyana Puspita Sari Anggi Ristiyana Puspitasari Anggita, Anggita Ani Rusilowati Ardhani, Nadia Eka Ardiana Ulfatun Ni’mah Arianti, Nyar Osmi Arif Widiyatmoko, Arif Ariningrum, Novita Dwi Ariyanti, Diva Fitria Aryati, Nur Indah Atmaja, Bagus Dwi Atunnisa, Rifa' Ayu Rahayu Bakri, Sitty Nur Syafa Damayanti, Tiara Dewi, Evi Indah Kusuma Dewi, Novi Ratna Dian Normalitasari Purnama Dita Seplita Sari Endah Retnowati Erna Noor Savitri, Erna Noor Farida Agus Setiawati Fauziyyah, Istiqomah Ifnan Febriyanto, Hendra Fidia Fibriana Habil Sultan Hadi, Surtini Haq, Mohammad Roy Thoriqul Haris, Amnan Hendra Hendra Heri Retnawati Heriyanti, Andhina Putri Ika Nur Fitriani Ika Nur Fitriani Illah , Khofiatul Intan Rahmalia Istiqomah Ifnan Fauziyyah Jauha Khoirun Nisa Karlinda Karlinda Karlinda Khoiriyah, Rohmatul Kholil, Putri Alifa Kriswantoro Kriswantoro Kurniawan, Tri Prasetyo Adam Listiaji, Prasetyo Lutfia Nur Hadiyanti, Lutfia Nur Luthfi Hanum Saputri M Fikri Amrullah Marcelinus Christwardana Muliana, Putri Dinda Najwa, Rizqa Nanto Sriyanto, Nanto Naufal, M Ahganiya Naufal, Muhammad Agnaf Nihayatul Bidayah Nisa, Jauha Khoirun Novi Ratna Dewi Nugraini, Anisa Ratna Parmin Parmin Parmin Pradama, Daffa Evan Purworatri, Nandang Puspitasari, Anggi Ristiyana Putri Dinda Muliana Rachmasari, Yuliana Titi Rafidah, Zahra Rahman, Nor Farahwahidah Abdul Rasendriya, Farica Ratna Dewi, Novi Revalina, Aurelia Dias Nanda Riza Arifudin Rizka Nurwakhidah Rohanah, Rohanah Rohman, Arfatur Safitri, Salma Nuraini Sajidi, Imam Saleh , Muhammad SAMSUL HADI Sa’diyah, Chalimatus Septiko Aji Shoba, Tafuz Mahabatis Siti Herlina Dewi Siti Rohmah Nurhayati Sodiqi, Kholillah Intan Sari Sofia, Aya Sri Ngabekti Sri Rejeki Dwi Astuti Sukirno Sukirno Sukmawati, Revi Tariza Putri Alpianti, Neng Tiara Damayanti Tiara Dwi Wulandari Dwi Tirtasari, Ni Luh Titik Ismiyati Tri Retnaningsih Soeprobowati Trida Ridho Fariz Trida Ridho, Fariz Wicaksana, Dhafa Satrio Rizki Widianingrum, Risti Ayu Wintribrata, Bunaya Hanif Yolanda, Helen Yulia Ayriza Zahra Rafidah Zahwa, Aisha Innayatul