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All Journal Jurnal Periodic Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) JURNAL EKSAKTA PENDIDIKAN (JEP) Eksakta : Berkala Ilmiah Bidang MIPA Pelita Eksakta G-Tech : Jurnal Teknologi Terapan Journal of Educational Chemistry (JEC) Edukimia Entalpi Pendidikan Kimia Ekasakti Jurnal Penelitian dan Pengabdian (EJPP) Jurnal Pijar MIPA Entalpi Pendidikan Kimia Jurnal Pengabdian Pada Masyarakat
Fajriah Azra
Universitas Negeri Padang
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Description of student learning difficulties in the acid-base material Annisa Annisa; Fajriah Azra
Jurnal Pijar Mipa Vol. 18 No. 5 (2023): September 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i5.5583

Abstract

Acid-base material is material that class XI IPA students study in the even semester. In this material, 81.38% of class XI IPA students at SMAN 16 Padang have yet to achieve the minimum criteria set. It indicates that students have learning difficulties. Learning difficulties are failures to attain learning goals characterized by low learning outcomes. This study aims to determine the percentage of students who experience learning difficulties for each indicator on acid-base material and determine the factors that cause learning difficulties experienced by students in terms of learning methods. Its research is a type of descriptive research. The sample for this research was students in class XI IPA 2 at SMAN 16 Padang in the 2022/2023 academic year, which consisted of 34 people. The research instrument was a diagnostic test with two-tier multiple-choice questionnaires and interviews. The data analysis used is descriptive, namely analyzing and then providing an understanding of the data in the form of numbers so that an overview can be given in an orderly, concise, and clear manner. The results of this study stated that students of SMAN 16 Padang had learning difficulties in acid-base material, with a percentage of 66.65% in the high category. The highest difficulty level is found in the first indicator (Analyzing the properties of the solution based on the acid-base theory according to Arrhenius, Bronsted-Lowry, and Lewis) of 72.88%. Ineffective learning methods cause learning difficulties experienced by students. Effective ways of learning are making study schedules and carrying them out, reading and taking notes, repeating subject matter, concentrating, and doing assignments.
Description of students learning difficulties in the atomic structure Nesha Putri Adi; Fajriah Azra
Jurnal Pijar Mipa Vol. 18 No. 5 (2023): September 2023
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v18i5.5584

Abstract

Atomic structure material is studied by high school students in class X in odd semesters. In this material, as much as 66.81% of class X students of SMAN 13 Padang have yet to achieve the minimum criteria set. It indicates that students have learning difficulties. Learning difficulties are failures in achieving learning goals characterized by low learning outcomes. This study aims to determine the percentage of learning difficulties experienced by students in atomic structure material and determine the factors that cause students' learning difficulties in terms of learning methods. This research is a type of descriptive research. The sample for this research was 36 students in class X E3 of SMAN 13 Padang in the 2022/2023 academic year. The research instrument was a diagnostic test with two-tier multiple-choice questionnaires and interviews. The data analysis used is descriptive, namely analyzing and providing an understanding of the data in the form of numbers so that an overview can be given in an orderly, concise, and clear manner. The results of this study stated that students of SMAN 13 Padang experienced learning difficulties in atomic structure material with a high category. The highest difficulty level is found in the fourth indicator (Determining electron configurations and quantum numbers), which is 81.25%. Learning difficulties experienced by students are caused by ineffective learning methods, such as not making a study schedule and not carrying it out, not reading and not taking notes, not repeating material, not concentrating on learning, and not doing assignments.
Desorpsi Anion Kromat (CrO42-) dari Adsorben Silika Mesopori Termodifikasi DMA (Dimethylamine) Septya Anggraini; Budhi Oktavia; Indang Dewata; Fajriah Azra
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.118120

Abstract

Mesopore silica modified with dimethylamine is one of the adsorbents used as a functional group for anion exchange and anion separation. Mesopore silica with the addition of amine compounds can be used to see the absorption capacity of silica against chromate anions using the column method. The absorption capacity of the chromate anion is 0.8609 mg/g with an absorption percentage of 99.3%. If the adsorption process has been maximized, the surface of the adsorbent is saturated or no longer able to absorb the adsorbate and equilibrium occurs, it can be continued with the desorption process. The factor used to see this desorption ability is the type of desorption, namely hydrochloric acid (HCl) with a release of 0.4061 mg of chromate anion with a desorption percentage of 95.3% and an optimum concentration of 0.1 M HCl with a release of 0.4287 mg chromate anion with a desorption percentage of 100%.
Pemodelan Hubungan Muatan Atom Bersih dengan Aktivitas Senyawa Turunan Metronidazol Ariloksi sebagai Antikanker Payudara dengan Metode AM1 Qory Sidwa Jufri; Fajriah Azra
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.117621

Abstract

An analysis study of the relationship between the net atomic charge modeling of 13 aryloxy metronidazole derivative compounds as anti-breast cancer has been carried out, which aims to obtain the net atomic charge value and the HKSA equation. The method used is the semi-empirical method of Austin Model 1 by performing geometry optimization. The best equation model selection is done by means of statistical correlation analysis and multilinear regression with the Backward. From the research results, model 1 is the best model with the equation LogIC50=-777.834+(146.644*qC2)+(434.317*qC5)+(1299.237*qN7)-(243.853*qO8)-(65.686*qC10)-(137.823 *qC11)+(66.348*qO12) Dengan n=7; R= 0.943; R2= 0.89; SE= 0.14774; Sig= 0.036; PRESS= 0.10914.
Pengembangan Instrumen Tes Diagnostik Untuk Melihat Gambaran Model Mental Peserta Didik Pada Materi Asam Basa Novi Arnita Devi; Fajriah Azra
Entalpi Pendidikan Kimia Vol 4 No 3 (2023)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/epk.v4i3.345

Abstract

Model mental merupakan representasi mental pribadi peserta didik terhadap suatu ide atau konsep. Model mental mewakili ide-ide dalam pikiran individu yang digunakan untuk menggambarkan dan menjelaskan suatu fenomena. Model mental peserta didik sangat penting untuk diketahui oleh guru karena dapat mengetahui tingkat pemahaman, kesulitan, dan miskonsepsi yang dialami peserta didik. Model mental peserta didik dapat diketahui dengan memberikan suatu tes diagnostik. Oleh karena, itu penelitian ini bertujuan untuk mengembangkan Instrumen Tes Diagnostik Four-Tier Untuk Melihat Gambaran Model Mental Peserta Didik Pada Materi Asam Basa yang memenuhi kriteria instrumen tes yang baik. Penelitian ini merupakan penelitian research and development (R&D) dengan menggunakan model pengembangan Treagust (1988). Berdasarkan hasil validasi terhadap lima orang validator, instrumen tes diagnostik dinyatakan valid dari segi konten dan konstruk dengan nilai rata-rata 0,84. Berdasarkan hasil uji coba terhadap peserta didik, didapatkan nilai relibilitas instrumen tes diagnostik pada tingkat pertama (first-tier) dan tingkat ketiga (third-tier) adalah sebesar 0,84 dan 0,83 dengan kategori sangat tinggi. Hasil penelitian menunjukkan bahwa indtrumen tes diagnostik yang dikembangkan sudah valid dan sudah memiliki kriteria instrumen tes yang baik.
Pengembangan Aplikasi Android Sebagai Media Pembelajaran pada Materi Bentuk Molekul untuk Kelas XI SMA/MA Cici Nur Awida; Fajriah Azra
G-Tech: Jurnal Teknologi Terapan Vol 8 No 1 (2024): G-Tech, Vol. 8 No. 1 Januari 2024
Publisher : Universitas Islam Raden Rahmat, Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33379/gtech.v8i1.3969

Abstract

Tujuan penelitian ini adalah mengembangkan suatu produk berupa aplikasi android pada materi bentuk molekul untuk kelas XI SMA/MA yang valid dan praktis. Jenis penelitian ini yaitu penelitian model pengembangan Plomp yang memiliki  tiga tahapan penelitian yaitu penelitian pendahuluan, pengembangan dan tahapan penilaian. Penelitian ini dibatasi sampai tahapan praktikalitas kelompok kecil. Uji validitas dilakukan oleh empat orang dosen kimia FMIPA, UNP sebagai ahli materi dan media, dua orang dosen FT,UNP sebagai ahli media dan dua orang guru SMAN 9 Padang sebagai ahli materi. Praktikalitas dilakukan kepada dua orang guru dan dua belas peserta didik. Validitas dianalisis denagn indeks Aiken’s V dan  praktikalitas dianalisi dengan rumus presentase. Penelitian ini menghasilkan suatu aplikasi android sebagai media pembelajaran yang valid (diperoleh nilai rata-rata yaitu untuk 0,90 ahli materi dan untuk 0,92 ahli media) dan hasil praktikalitas pada kelompok kecil memperoleh hasil sangat praktis ( nilai presentase kepraktisan sebesar 90,36% untuk guru dan 87,02% untuk peserta didik).
Co-Authors Ahmad Raisan R.P Ananda Putra Andromeda Andromeda Anisa Pradila Annisa Ade Putri Annisa Annisa Annisa Khairani Putri Asmiyunda Asmiyunda Aura, Selfi Monica Batri, Vani Mayfi Bayharti . Bayharti Bayharti Budhi Oktavia Budhi Oktavia Cici Nur Awida Della Rezkyta Amanda Dinda Purnama Kristy Edi Nasra Elfa Hayati Guspatni Guspatni Hardeli - Hardeli Hardeli Indang Dewata Intan Nadya Istiva Depiyahani Kristy, Dinda Purnama M. Iqbal S.G Mardani, Meri Aulia Meri Aulia Mardani Miftahul Khair Minda Azhar Minda Azhar Mirella Fonda Maahury Nadya UP Nagmah Putri Dinda Toni Nesha Putri Adi Norma Wahyunita Novi Arnita Devi Pera Meilita Qory Sidwa Jufri Rahadian Zainul Randa Sagita Riga Riga Riri Wahyuni Robiatul Adawiyah Sagita, Randa Selfi Monica Aura Septya Anggraini Shelvy WA Silvinia Humaira Silvira Rahmi Suryelita . Syamsi Aini Tessa Faradilla Umar Kalmar Nizar Vani Mayfi Batri Yeri Mardesi Yerimadesi . Zonalia Fitriza