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PEMAHAMAN KONSEP SISWA MATERI LARUTAN PENYANGGA DALAM PEMBELAJARAN MULTIPLE REPRESENTASI Alighiri, Dante; Drastisianti, Apriliana; Susilaningsih, Endang
Jurnal Inovasi Pendidikan Kimia Vol 12, No 2 (2018): July 2018
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Materi larutan penyangga banyak mengandung konsep abstrak dan berkaitan erat dengan kehidupan sehari-hari sehingga memerlukan penjelasan dalam berbagai bentuk representasi yang dapat memvisualisasikan materi larutan penyangga sehingga diharapkan siswa dapat mengamati gejala-gejala yang terjadi dan menganalisis serta menarik kesimpulan yang lebih komprehensif. Pembelajaran yang dapat menunjang pembelajaran tersebut adalah pembelajaran multiple representasi. Penelitian ini bertujuan untuk mengetahui dan mendeskripsikan tingkat kemampuan pemahaman konsep siswa pada materi larutan penyangga di kelas XI MIPA SMA Negeri 12 Semarang. Penelitian ini menggunakan pendekatan kuantitatif dengan metode deskriptif dan subyek penelitian kelas XI MIPA SMA Negeri 12 Semarang sebanyak 76 siswa. Data penelitian diperoleh dari tes pemahaman konsep berbentuk three-tier multiple choice yang telah divalidasi. Berdasarkan hasil penelitian diperoleh bahwa pemahaman konsep siswa pada materi larutan penyangga menunjukkan indikator pemahaman konsep belum semua terpenuhi secara maksimal oleh seluruh siswa. Hal tersebut karena indikator penelitian mengklasifikasikan masih tergolong kriteria sedang pada materi larutan penyangga yaitu sebesar 45,53% paham, 31,05% kurang paham, 12,96% miskonsepsi, dan 10,46% tidak paham.
Identification of Misconceptions on Buffer Material Using Three-Tier Test in the Learning of Multiple Representation Drastisianti, Apriliana; Supartono, Supartono; Wijayati, Nanik; Susilaningsih, Endang
Journal of Innovative Science Education Vol 7 No 1 (2018)
Publisher : Postgraduate, Universitas Negeri Semarang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.015 KB) | DOI: 10.15294/jise.v7i1.23978

Abstract

This research was a mixed method with the design of sequential explanatory strategy. This research aims to identify student misconception on buffer solution material and obtain student response to multiple representation-chemoentrepreneurship (entrepreneurship in the chemistry field) teaching materials. Research subjects were 114 students from grade XI MIPA 3, XI MIPA 4, and XI MIPA 5 SMA Negeri 12 Semarang academic year 2017/2018. Three-tier multiple choice diagnostic test obtained from the research data amounted to 20 items, questionnaire to know the student's response to teaching materials, and interview to confirm student's answer. The result of the validation of teaching materials by three validators shows that the teaching materials of multiple representation-chemoentrepreneurship are very suitable to be used in chemistry learning with an average score of 190.33 from 212. The average score of the questionnaire is 28,026 with proper category and reliability of 0.906. The misconception profile obtained is the definition and the properties of the buffer solution 3.421%; the components of buffer solution 2.149%; working principle 2.632%; pH of buffer solution 3.596%; and the role of buffer solution 0.965% with a total misconception 12.763%.
Optimization of Bioethanol Synthesis from Durian Seeds Using Saccharomyces Cerevisiae in Fermentation Process Masturi, Masturi; Alighiri, Dante; Dwijananti, Pratiwi; Widodo, Rahmat Doni; Budiyanto, Saraswati Putri; Drastisianti, Apriliana
Jurnal Bahan Alam Terbarukan Vol 9, No 1 (2020): June 2020 [Nationally Accredited - Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v9i1.23574

Abstract

Bioethanol is an alternative energy of environmentally friendly as a substitute for petroleum. Sucrose, starch, and fibrous cellulose (lignocellulose) are the main ingredients for bioethanol production. The material is very easy and abundant to get from the waste of agricultural crops. One of these agricultural wastes in Indonesia that have not been used optimally is durian seeds. Durian seeds only become waste and are not commercially useful, even though they contain high carbohydrates, which is possible as a potential new source for bioethanol production. In this work, an experimental study was conducted on bioethanol synthesis from durian seeds through fermentation by Saccharomyces cerevisiae yeast in aerobic fermenter. The process for the production of starch-based bioethanol includes milling, hydrolysis, detoxification, fermentation, and distillation. At the stage of fermentation, variations in the duration of fermentation were applied for 1-11 days. Carbohydrates contained in durian seed flour are 11.541%, which is the largest content. The highest result of ethanol content is 14.72 % (v/v) in 9 day fermentation periods by using Saccharomyces cerevisiae in aerobic conditions. Distillation to enrich bioethanol was carried out by batch vacuum distillation at 68°C for ± 180 minutes and produced bioethanol with a purity of 95%.
Implementation of Collaborative Learning Based on Sharing task Activi-ties on the Topic of Factors Afecting Reaction Rate Sari, Wiwik Kartika; Drastisianti, Apriliana; Nada, Ella Izzatin
PAEDAGOGIA Vol 23, No 2 (2020): PAEDAGOGIA Jilid 23 Nomor 2 (2020)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/paedagogia.v23i2.52237

Abstract

Learning of 21st century emphasizes the ability of students to find out from various sources, formulate problems, think analytically, and collaborate in solving problems. Collabora­tion will occur when classroom interactions between teacher and students can critically integrate topics, express, listen to multiple voices and points of view, and create effective learning relation­ships. The aims of this study was to analyze collaborative learning that occurs between students based on the sharing task activities that have been designed. This research was conducted on XI grade high school students. The data was taken from the topic of factors affecting reaction rate. The research method used is descriptive qualitative. The instruments used were didactic designs and student worksheets that have been declared valid by experts. The learning process is observed and recorded. Based on the results of observations and videos, student activities were analyzed which parts showed collaboration between students during the learning process using sharing tasks. Collaboration that occurs between students shows a quality learning process.
Pembelajaran Berbasis Riset untuk Meningkatkan Kemampuan Multipel Representasi Mahasiswa dalam Memahami Soal HOTS Apriliana Drastisianti; Dante Alighiri
Jurnal Komunikasi Pendidikan Vol 5, No 2 (2021)
Publisher : Universitas Veteran Bangun Nusantara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32585/jkp.v5i2.1041

Abstract

Mahasiswa pendidikan kimia sebagai calon guru kimia harus menguasai kompetensi guru salah satunya kompetensi pedagogik. Upaya untuk membekali mahasiswa pendidikan kimia agar memiliki kompetensi tersebut salah satunya dengan membuat soal HOTS (Higher Order Thinking Skills) dalam proses pembelajaran. Penelitian ini merupakan penelitian pengembangan dan bertujuan untuk mengetahui kemampuan mahasiswa pendidikan kimia dalam membuat soal HOTS berbasis multipel representasi. Penelitian dilakukan dengan menggunakan prosedur pengembangan Borg & Gall yang berupa 10 tahap, tetapi dibatasi hanya sampai tahap 7. Pengambilan data dilakukan dengan lembar angket, uji coba soal, dan wawancara. Soal-soal yang dibuat oleh mahasiswa dikategorikan berdasarkan ranah kognitif taksonomi Bloom dan diperoleh 40 soal dengan rincian soal ranah C1 30%, C2 17,50%, C3 15%, C4 22,50%, C5 10%, dan C6 5%. Soal dengan kategori HOTS sebanyak 15 soal (37,50%). Soal  HOTS tersebut dianalisis lebih lanjut dan diperoleh reliabilitas sebesar 0,78 (tinggi) dan 11 soal memenuhi kriteria sehingga dapat digunakan. Kemampuan multipel representasi mahasiswa dalam menyusun soal HOTS mengalami peningkatan.
Implementation of Online Learning Based Quizizz for Identification of Difficult Concepts and Misconceptions in Buffer Material Apriliana Drastisianti; Wiwik Kartika Sari; Dante Alighiri
PAEDAGOGIA Vol 23, No 2 (2020): PAEDAGOGIA Jilid 23 Nomor 2 (2020)
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/paedagogia.v23i2.52239

Abstract

This study aims to identify difficult concepts and misconceptions of buffer solution material during online learning. Basic Chemistry 2 course learning on buffer solution material is carried out online. The research subjects were 25 chemistry education students who took the Basic Chemistry 2 course for the 2019/2020 academic year. The research method used is descriptive. Data collection was carried out by providing multiple-choice tests using quizzes, a questionnaire to determine learning media, and an online learning process evaluation questionnaire. The results showed that the biggest difficult concept was the working principle concept of the buffer solution (92%). The misconceptions experienced by students are assuming that the reaction of acidic and alkaline solutions always produces a buffer solution, H2SO4 and SO42- are components of the buffer solution, the addition of strong acids to alkaline buffer solutions cause the solution to be neutral, and those that play a role in determining the pH of the buffer solution are weak acids / weak bases and their salts.
Komparasi Hasil Belajar Kimia Menggunakan Pembelajaran Berbasis Penilaian Performens dan Project Based Learning (PjBL) Apriliana Drastisianti; Lis Setiyo Ningrum; Dante Alighiri
JURNAL PENDIDIKAN MIPA Vol 12 No 3 (2022): JURNAL PENDIDIKAN MIPA
Publisher : Pusat Publikasi Ilmiah, STKIP Taman Siswa Bima

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37630/jpm.v12i3.696

Abstract

Perkembangan ilmu pengetahuan dan teknologi berpengaruh pada bidang pendidikan sehingga diperlukan sumber daya manusia (SDM) yang berkualitas. Salah satu cara meningkatkan kualitas SDM tersebut dengan memperbaiki konsep menghafal yang dipegang teguh oleh siswa. Penelitian ini bertujuan untuk mengetahui hasil belajar kimia yang lebih baik antara pembelajaran berbasis penilaian performens dengan project based learning (PjBL). Populasi penelitian adalah semua siswa kelas XI IPA berjumlah 120 orang. Pengambilan sampel dilakukan dengan cluster random sampling. Penelitian menggunakan metode penelitian kuantitatif. Sampel penelitian terdiri dari dua kelas eksperimen 1 yang menggunakan pembelajaran berbasis penilaian performens dan kelas eksperimen 2 yang menggunakan project based learning (PjBL). Metode pengumpulan data menggunakan dokumentasi dan tes. Instrumen penelitian berupa perangkat pembelajaran dan soal tes hasil belajar kimia. Analisis data yang dilakukan adalah uji normalitas dan homogenitas. Hasil penelitian menunjukkan bahwa berdasarkan uji independent sample t-test nilai signifikansi 0,012 < 0,05 sehingga terdapat perbedaan yang signifikan antara hasil belajar siswa kelas eksperimen 1 dan kelas eksperimen 2.
The Effectiveness of Cognitive Conflict-Based Chemistry Learning in Reducing Students' Misconceptions of Acid-Base Materials Lis Setiyo Ningrum; Apriliana Drastisianti; Hanifah Setiowati; Resi Pratiwi
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 4 (2022): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i4.2092

Abstract

A misconception is a problem that is often encountered in the world of education caused by several things, including students' initial prejudices, incompetent teachers, unclear textbooks, different contexts of the student experience, and teaching methods that only contain lectures. This study is intended to answer the problem regarding the effectiveness of cognitive conflict-based chemistry learning in reducing students' misconceptions about acid-base material. This research is quasi-experimental research with One group Pre-test and Post-test Design. The population in this study was all class XI IPA. The sample in this study was class XI IPA I. The instrument used in this study was a student's concept understanding test. The data collection method used is a multiple-choice reasoned test method. Changes in misconceptions were analyzed descriptively and statistically. A descriptive analysis was conducted to see changes in students' concepts. Statistical analysis using the T-test. Based on the research, it was found that the indicators of questions that experienced misconceptions were: Arrhenius acid-base theory (32.05%), Arrhenius acid-base classification (56.40%), Bronsted Lowry theory (43.59%), writing down the acid-base reaction equation according to Bronsted Lowry and Lewis acid-base theory (59.00%), distinguish between Arrhenius, Bronsted Lowry and Lewis acid-base theories (49.00%), the nature of acidic and basic solutions (47.00), degree of acidity/pH (79.00%), determination of strong acid (79.00%), determination of strong base (46.00%), degree of ionization in acid and base determination (46.00%) and application of the concept of pH in pollution (66.00%). Understanding of students' initial conceptions, namely students who are classified as knowing the concept of 23.18%, misconceptions of 53.95%, and not knowing the concept of 22.87%, while the understanding of the final conception of students is students who are classified as knowing concepts of 76, 20%, a misconception of 15.49% and not knowing the concept of 8.31%. Based on these data, it can be concluded that the cognitive conflict learning method is effective in reducing students' misconceptions
Development of E-Module Chemistry oriented Disaster Mitigation of Elemental Chemicals Septya Nur Afijah; Apriliana Drastisianti; Wirda Udaibah
Social, Humanities, and Educational Studies (SHES): Conference Series Vol 6, No 4 (2023): Social, Humanities, and Educational Studies (SHEs): Conference Series
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/shes.v6i4.81292

Abstract

Mitigasi bencana dapat dilakukan secara non struktural untuk meningkatkan kemampuan menghadapi bencana melalui media pembelajaran berorientasi mitigasi bencana. Tujuan penelitian ini adalah untuk mengetahui karakteristik dan kualitas produk serta respon siswa. Penelitian ini merupakan penelitian R&D dengan menggunakan model DBR (Design Based Research) dari Reeves yaitu analisis masalah, pengembangan solusi, proses berulang uji coba solusi, dan refleksi. Produk yang dikembangkan mempunyai karakteristik berupa materi kebencanaan tanah longsor dan terintegrasi dengan mata pelajaran kimia dikemas dalam bentuk e-modul. Produk yang dikembangkan layak digunakan dengan skor rata-rata aspek validasi ahli materi 0,83 (sangat valid), skor rata-rata aspek validasi ahli media 0,78 (valid), dan hasil respon siswa mendapatkan persentase 83,31% (baik). E-modul kimia berorientasi mitigasi bencana materi kimia unsur dapat digunakan oleh siswa untuk menunjang pembelajaran daring dan upaya mitigasi bencana secara non struktural. 
Development of Chemical Crossword Puzzle (Tekilama) Periodic System of Elements as a Companion Learning Media Krisna Khumar; Apriliana Drastisianti
Social, Humanities, and Educational Studies (SHES): Conference Series Vol 6, No 4 (2023): Social, Humanities, and Educational Studies (SHEs): Conference Series
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/shes.v6i4.81229

Abstract

Penelitian pengembangan ini dilatar belakangi pada penggunaan media kimia yang digunakan belum maksimal sehingga peserta didik kurang terlibat aktif dalam pembelajaran. Tujuan penelitian ini yaitu untuk mengembangkan media pembelajaran pendamping materi sistem periodik unsur dan menguji kualitas media pembelajaran yang dikembangkan. Penelitian pengembangan ini menggunakan model penelitian ADDIE. Karakteristik dari media pembelajaran ini yaitu memuat materi sistem periodik unsur dan latihan soal yang dikemas dalam bentuk teka teki silang. Hasil validasi ahli materi mendapatkan kriteria valid dengan nilai 4, sedangkan hasil validasi ahli media mendapatkan kriteria valid dengan nilai 4,08. Hasil dari penilaian peserta didik menapatkan kriteria sangat valid dengan nilai 4,27. Dengan demikian dapat disimpulkan bahwa media pembelajaran tekilama layak digunakan.