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All Journal Jurnal Pendidikan IPA Indonesia Indonesian Journal of Mathematics and Natural Sciences
S. Haryani
Jurusan Kimia, FMIPA, Universitas Negeri Semarang, Indonesia
Education Mathematics

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PENGEMBANGAN PERANGKAT PEMBELAJARAN BERBASIS MASALAH UNTUK MENINGKATKAN SOFT SKILL DAN PEMAHAMAN KONSEP -, Faizah; S. Miswadi, S.; Haryani, S.
Jurnal Pendidikan IPA Indonesia Vol 2, No 2 (2013): October 2013
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v2i2.2712

Abstract

Penelitian ini bertujuan untuk menganalisis kevalidan perangkat pembelajaran, peningkatan soft skill dan pemahaman konsep, serta respon siswa. Metode penelitian ini adalah Research and Development (R & D). Hasil menunjukkan bahwa perangkat pembelajaran berbasis masalah pada materi hidrolisis garam yang dikembangkan memiliki kriteria valid dengan rata-rata skor sebesar 3,57, adanya peningkatan soft skill siswa dengan N-Gain sebesar 0,46 dalam kategori sedang, sebanyak 72,72% siswa mencapai ketuntasan soft skill dengan kriteria tinggi atau sangat tinggi, pemahaman konsep siswa juga meningkat dengan perolehan N-Gain sebesar 0,69 dalam kategori sedang, sebanyak 84,85% siswa mencapai ketuntasan belajar dengan KKM ≥ 76, serta siswa memberikan respon positif. This study aimed to analyze learning tools validity, soft skills improvement, concept understanding and students’ responses. The metode of this research is Research and Development (R & D). The results show that problem-based learning tools categorized valid with an average score of 3,57, the improvement of students’ soft skills was available with N-Gain of 0.46, the number of 72, 72% students whom achieving mastery of soft skills with a high or very high criteria, the concept understanding of students also increased by providing N-Gain of 0.69, the number of 84.85% students whom achieving score completeness KKM ≥ 76, this study also obtained student positive responses.
ADSORPSI KROM(VI) OLEH ARANG AKTIF SERABUT KELAPA SERTA IMOBILISASINYA PADA BATAKO Zuhroh, N.; Prasetya, A. T.; Haryani, S.
Jurnal MIPA Vol 39, No 1 (2016): April 2016
Publisher : Jurnal MIPA

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

Abstract

Penelitian ini bertujuan untuk mengimobilisasi limbah arang aktif serabut kelapa yang telah menyerap ion logam Krom(VI) sebagai bahan campuran batako. Pada penelitian ini, arang dan arang aktif serabut kelapa dibandingkan kualitasnya dengan parameter uji kadar air, uji kadar abu dan uji daya adsorp iod. Krom(VI) diadsorpsi oleh arang aktif serabut kelapa untuk mengetahui pH optimum (1, 3 ,5, 7, dan 9) dan waktu kontak optimumnya (10, 30, 60, 120, dan 150 menit). Limbah arang aktif hasil adsorpsi selanjutnya dicampurkan pada batako. Batako direndam ke dalam larutan pendesorpsi pafa pH 1, 5, 7, 9, dan 13 selama satu minggu. Hasil penelitian menunjukkan arang aktif serabut kelapa memiliki kualitas yang lebih baik daripada arang serabut kelapa. Arang aktif serabut kelapa memiliki kadar air sebesar 4,57%, kadar abu sebesar 3,71% dan daya adsorp terhadap iod sebesar 414,9119 mg/g. Sedangkan pada arang serabut kelapa memiliki kadar air sebesar 9,10%, kadar abu sebesar 4,28% dan daya adsorp terhadap iod sebesar 302,9929 mg/g. pH dan waktu kontak optimum yang diperlukan arang aktif serabut kelapa untuk menurunkan kadar Krom(VI) adalah pada pH 3 dan pada waktu 2,5 jam. Konsentrasi Krom(VI) yang dilepaskan pada  pH 1, 5, 7, 9, dan 13 tidak terdeteksi sedangkan ketentuan baku mutu TCLP zat pencemar limbah untuk logam berat krom maksimal 5 ppm.This research aims to immobilize active charcoal of coconut fibers wich have adsorbed Chromium(VI) ion as a mixture of brick. In this research, active charcoal and charcoal of coconut fibers will be compared to determine its quality using parameter test of water content, ash content and iod adsorption. Chromium(VI) was adsorbed by activated charcoal of coconut fibers to determine the optimum pH (1, 3 ,5, 7 and 9) and optimum contact time (10, 30, 60, 120 and 150 minute). Then, the activated charcoal will be used to make the brick. The brick is soaked in the solution at pH 1, 5, 7, 9and 13 for one week. The result shows that activated charcoal of coconut fibers have better quality than charcoal of coconut fibers. The water content of activated charcoal of coconut fibers is 4.57%, the ash content is 3.71% and the absorption of iodine is 414.9119 mg/g. While the water content of charcoal of coconut fibers is 9.10%, the ash content is 4.28% and the absorption of iod is 302.9929 mg/g. The optimum pH and equilibrium time that are required by activated charcoal of coconut fibers to reduce levels of Chromium(VI) is  on pH 3 and time 2.5 hours. The concentration of Chromium(VI) at pH 1, 5, 7, 9 and 13 is not detected while the standard quality of provisions contaminants TCLP heavy metal chromium waste for a maximum of 5 ppm. 
Building The Character of Pre-Service Teachers through The Learning Model of Problem-Based Analytical Chemistry Lab Work Haryani, S.; Prasetya, A. T.; Bahron, H.
Jurnal Pendidikan IPA Indonesia Vol 6, No 2 (2017): October 2017
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v6i2.10688

Abstract

This research aims to apply and find out the characteristics of Problem-Based Instrumental Analysis of Chemistry Lab Work Learning Model (IACLLM) which is able to build the characters, improve the conceptual mastery and the ability of problem solving. The research using experimental quasy with 2 student groups of pre service chemistry teachers as the subjects of the research applied the treatment of problem-based IACLLM for the experimental class and lab work learning with standard lab work procedure in control class. Conceptual mastery was measured using essay test; problem solving skills were measured using assessment of problem solving reports, presentation of the results, and kit making products; whereas the emerged characters were observed during the learning process. The result of this research showed that problem-based IACLLM had open-ended problem characteristic, had produced local material kit, and characters were observed in every stage of problem-based learning model. The implementation of the model could improve the spectrometric and electrometric conceptual mastery, the problem solving skills on a very good level and also some characters were developing during learning process, including religious, discipline, honest, curious, creative, critical, cooperative, communicative, independent, and able to appreciate other people’s opinions and achievements, leadership, democracy, and able to be thorough and careful, and hardworking.
PENGEMBANGAN PERANGKAT PEMBELAJARAN BERBASIS MASALAH UNTUK MENINGKATKAN SOFT SKILL DAN PEMAHAMAN KONSEP -, Faizah; S. Miswadi, S.; Haryani, S.
Jurnal Pendidikan IPA Indonesia Vol 2, No 2 (2013): October 2013
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v2i2.2712

Abstract

Penelitian ini bertujuan untuk menganalisis kevalidan perangkat pembelajaran, peningkatan soft skill dan pemahaman konsep, serta respon siswa. Metode penelitian ini adalah Research and Development (R & D). Hasil menunjukkan bahwa perangkat pembelajaran berbasis masalah pada materi hidrolisis garam yang dikembangkan memiliki kriteria valid dengan rata-rata skor sebesar 3,57, adanya peningkatan soft skill siswa dengan N-Gain sebesar 0,46 dalam kategori sedang, sebanyak 72,72% siswa mencapai ketuntasan soft skill dengan kriteria tinggi atau sangat tinggi, pemahaman konsep siswa juga meningkat dengan perolehan N-Gain sebesar 0,69 dalam kategori sedang, sebanyak 84,85% siswa mencapai ketuntasan belajar dengan KKM ≥ 76, serta siswa memberikan respon positif. This study aimed to analyze learning tools validity, soft skills improvement, concept understanding and students’ responses. The metode of this research is Research and Development (R & D). The results show that problem-based learning tools categorized valid with an average score of 3,57, the improvement of students’ soft skills was available with N-Gain of 0.46, the number of 72, 72% students whom achieving mastery of soft skills with a high or very high criteria, the concept understanding of students also increased by providing N-Gain of 0.69, the number of 84.85% students whom achieving score completeness KKM ≥ 76, this study also obtained student positive responses.
Students’ Satisfaction Index on Chemistry Learning Process Redhana, I. W.; Sudria, I. B. N.; Suardana, I. N.; W. Suja, I.; Haryani, S.
Jurnal Pendidikan IPA Indonesia Vol 8, No 1 (2019): March 2019
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v8i1.15331

Abstract

This study was aimed at describing the index of students’ satisfaction in the chemistry learning process in SMAN 4 Singaraja Bali Indonesia and the factors that influenced it. For that, the survey research was conducted. The population was all students of the tenth and eleventh-grade students of groups of mathematics and natural sciences in academic year 2016/2017 in SMAN 4 Singaraja Bali consisting of 478 people. All population members became samples. Data were collected using a questionnaire. The numbers of respondents which returned the questionnaire were 431 people. Data the were analyzed by descriptive statistics. The results of the study showed that the index of students’ satisfaction viewed from a dimension of tangible, reliability, responsiveness, assurance, and empathy was 86.24%, 85.67%, 87.42%, 88.11%, and 85.18%, respectively, and all dimensions were quite high. Overall the index of students’ satisfaction in the chemistry teaching and learning process was 86.19% and it was high.
ADSORPSI KROM(VI) OLEH ARANG AKTIF SERABUT KELAPA SERTA IMOBILISASINYA PADA BATAKO Zuhroh, N.; Prasetya, A. T.; Haryani, S.
Indonesian Journal of Mathematics and Natural Sciences Vol 39, No 1 (2016): April 2016
Publisher : Universitas Negeri Semarang

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

Abstract

Penelitian ini bertujuan untuk mengimobilisasi limbah arang aktif serabut kelapa yang telah menyerap ion logam Krom(VI) sebagai bahan campuran batako. Pada penelitian ini, arang dan arang aktif serabut kelapa dibandingkan kualitasnya dengan parameter uji kadar air, uji kadar abu dan uji daya adsorp iod. Krom(VI) diadsorpsi oleh arang aktif serabut kelapa untuk mengetahui pH optimum (1, 3 ,5, 7, dan 9) dan waktu kontak optimumnya (10, 30, 60, 120, dan 150 menit). Limbah arang aktif hasil adsorpsi selanjutnya dicampurkan pada batako. Batako direndam ke dalam larutan pendesorpsi pafa pH 1, 5, 7, 9, dan 13 selama satu minggu. Hasil penelitian menunjukkan arang aktif serabut kelapa memiliki kualitas yang lebih baik daripada arang serabut kelapa. Arang aktif serabut kelapa memiliki kadar air sebesar 4,57%, kadar abu sebesar 3,71% dan daya adsorp terhadap iod sebesar 414,9119 mg/g. Sedangkan pada arang serabut kelapa memiliki kadar air sebesar 9,10%, kadar abu sebesar 4,28% dan daya adsorp terhadap iod sebesar 302,9929 mg/g. pH dan waktu kontak optimum yang diperlukan arang aktif serabut kelapa untuk menurunkan kadar Krom(VI) adalah pada pH 3 dan pada waktu 2,5 jam. Konsentrasi Krom(VI) yang dilepaskan pada  pH 1, 5, 7, 9, dan 13 tidak terdeteksi sedangkan ketentuan baku mutu TCLP zat pencemar limbah untuk logam berat krom maksimal 5 ppm.This research aims to immobilize active charcoal of coconut fibers wich have adsorbed Chromium(VI) ion as a mixture of brick. In this research, active charcoal and charcoal of coconut fibers will be compared to determine its quality using parameter test of water content, ash content and iod adsorption. Chromium(VI) was adsorbed by activated charcoal of coconut fibers to determine the optimum pH (1, 3 ,5, 7 and 9) and optimum contact time (10, 30, 60, 120 and 150 minute). Then, the activated charcoal will be used to make the brick. The brick is soaked in the solution at pH 1, 5, 7, 9and 13 for one week. The result shows that activated charcoal of coconut fibers have better quality than charcoal of coconut fibers. The water content of activated charcoal of coconut fibers is 4.57%, the ash content is 3.71% and the absorption of iodine is 414.9119 mg/g. While the water content of charcoal of coconut fibers is 9.10%, the ash content is 4.28% and the absorption of iod is 302.9929 mg/g. The optimum pH and equilibrium time that are required by activated charcoal of coconut fibers to reduce levels of Chromium(VI) is  on pH 3 and time 2.5 hours. The concentration of Chromium(VI) at pH 1, 5, 7, 9 and 13 is not detected while the standard quality of provisions contaminants TCLP heavy metal chromium waste for a maximum of 5 ppm. 
Project-Based Scaffolding TPACK Model to Improve Learning Design Ability and TPACK of Pre-Service Science Teacher Dewi, N. R.; Rusilowati, A.; Saptono, S.; Haryani, S.
Jurnal Pendidikan IPA Indonesia Vol 11, No 3 (2022): September 2022
Publisher : Program Studi Pendidikan IPA Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpii.v11i3.38566

Abstract

Learning design abilities and TPACK are very much needed by prospective science teachers to prepare science learning in the 21st century. The specific objectives of this research were to analyze the improvement of the learning design ability and TPACK possessed by pre-service science teachers after taking lectures with the Project-Based Scaffolding TPACK (PBST) model and analyze the correlation between TPACK and learning design abilities. The research used was quantitative research with non-equivalent control group design. The samples selected were 4 classes of pre-service science teachers who were taking Science Learning Strategy and Design courses. The instrument used in this study consisted of a lesson plan assessment sheet and a TPACK evaluation test. Data analysis used was independent t test, N-Gain test, and bivariate correlation test using SPSS. The results showed that the experimental class obtained an increase in the high category on learning design ability and the medium category on TPACK. After being given PBST model treatment in the experimental class, there is a significant difference in the learning design ability and TPACK between the experimental and control classes. In addition, the results also show that there is a correlation between TPACK and learning design ability. The PBST model is expected to be a solution offer to prepare pre-service science teachers at higher education in line with the demands of 21st century learning based on technology integration.
Co-Authors A. Rusilowati A. T. Prasetya Bahron, H. Dr. Ida Bagus Nyoman Sudria,M.Sc . Faizah Faizah I Wayan Redhana I Wayan Suja N. R. Dewi N. Zuhroh, N. S. S. Miswadi S. Saptono Suardana, I. N.