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Validition of Circulation Systems e-Modules Based Learning Cycle 8E Yuni Rosiana; Wan Syafii; Riki Apriyandi Putra; Dedi Futra
Journal Of Biology Education Vol 6, No 1 (2023): Journal Of Biology Education
Publisher : Tadris Biologi IAIN Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21043/jobe.v6i1.15345

This study is aimed for developing an electronic module (e-module) on the material of circulation system based on learning cycle 8e. This type of research and development used the Analysis, Design, Development, Implementation and Evaluation (ADDIE) model. The used research instruments were interview sheets and validation questionnaires. The e-module was validated by three experts and the validated aspects were included aspects of didactic, construction and technical. The obtained data were analyzed quantitatively and described descriptively. The results of the study found that the didactic aspect obtained the highest validity value of 96.15% in the II learning material. While the construction aspect found the highest validity value in learning material III was 95.63%. In the technical aspect, the highest score was obtained in learning material III of 93.75%. Therefore, it can be concluded that the e-module circulation system based on learning cycle 8e has good quality and can be used in learning activities.

Effectiveness of E-Module Circulation System Based on 8E Learning Cycle on High School Student's Critical Thinking Ability Yuni Rosiana; Wan Syafii; Riki Apriyandi Putra; Dedi Futra
Journal of Educational Sciences Vol 7, No 3: July 2023
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.7.3.p.434-441

Critical thinking skills are skills students must have in the 21st century. These skills can improve analytical skills and make students think more carefully This study aims to determine the effect of circulation system e-module based on learning cycle 8e on high school students' critical thinking skills. This type of research is quasi-experimental, which consists of 2 classes, namely XI IPA 1 as the experimental class with treatment using e-module circulation system based on learning cycle 8e and XI IPA 2 as the control class, which uses conventional learning. Based on the results of the study, it was found that there was a significant effect of the circulation system e-module based on learning cycle 8e on students' critical thinking skills, where in the control class the average posttest score was far below the experimental class, which was 55.5 and the experimental class average posttest score was 69.5. Based on the results of hypothesis testing, a significant value (2 tailed) was obtained of 0.003 (p<0.05). The use of circulation system e-module based on learning cycle 8e has a positive effect on students' critical thinking skills.

The Influence of the Principal's Academic Supervision and School Climate on the Performance of Public Middle School Teachers Murti, Meri Kristina; Suanto, Elfis; Futra, Dedi
JURNAL PAJAR (Pendidikan dan Pengajaran) Vol 8, No 2 (2024)
Publisher : Laboratorium Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/pjr.v8i2.9655

Teacher performance is something that needs and deserves to be examined in depth. Many factors cause problems related to teacher performance. This article will cover the influence of the principal's academic supervision and school climate on the performance of state middle school teachers. This research uses a quantitative-descriptive approach. This quantitative descriptive research systematically, actually, and accurately describes certain social phenomena, with the aim of describing in detail the existing facts and data. Data collection techniques use observation, documentation, and questionnaires. The subjects of the research were 76 teachers at state middle schools. The results of the research show that: 1) The principal's academic supervision has a significant positive influence on teacher performance, with a significance value of 0.022 or smaller than the alpha value of 0.05. 2) School climate has a significant positive influence on teacher performance, with a significance value of 0.000. 3) The principal's academic supervision and school climate jointly influence teacher performance, with a significance value of 0.000 and an R-Square value of 0.590 indicating that the proportion of influence of the principal's academic supervision variable and school climate on the teacher performance variable is 59.0%.

The Influence of Time Management and Teacher Commitment on Teacher Performance in Junior High Schools in Tualang District, Siak Regency Mensupriantos, Mensupriantos; Chairilsyah, Daviq; Futra, Dedi
JURNAL PAJAR (Pendidikan dan Pengajaran) Vol 8, No 1 (2024)
Publisher : Laboratorium Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33578/pjr.v8i1.9672

Teacher performance is something that needs and deserves to be examined in depth. Many factors cause problems related to teacher performance. This article will discuss the influence of time management and teacher commitment on teacher performance at junior high schools in Tualang District, Siak Regency. This research uses a quantitative-descriptive approach. This quantitative descriptive research systematically, actually, and accurately describes certain social phenomena, with the aim of describing in detail the existing facts and data. Data collection techniques use observation, documentation, and questionnaires. The subjects of the research were 107 teachers in public middle schools in Tualang District, Siak Regency. The research results show that 1) time management has a significant positive influence on teacher performance, with a significance value of 0.000 or less than an alpha value of 0.05. 2) Teacher commitment has a significant positive influence on teacher performance, with a significance value of 0.000. 3) Time management and teacher commitment jointly influence teacher performance, with a significance value of 0.000 and an R-Square value of 0.569, indicating that the proportion of influence of time management variables and teacher commitment on teacher performance variables is 56.9%.

Development of Multiple Representation Based Assessment Instruments to Measure Students' Conceptual Understanding of Buffer Solution Material Rehamita. S, Rehamita. S; Linda, Roza; Futra, Dedi
Journal of Educational Sciences Vol 8. No. 4. October 2024
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.8.4.p.671-689

Buffer solution material was chosen in the process of developing an instrument based on multiple representations, because the buffer solution material contains many representations. Buffer solution material requires explanations in various forms of representation that can visualize the buffer solution material so that students are expected to be able to observe the symptoms that occur and analyze and draw more comprehensive conclusions. This study aims to measure students' conceptual understanding of buffer solution material based on aspects of material, language, construction, and conceptual understanding. The method used is Research and Development with the ADDIE model, involving two schools, SMAN 1 and SMAN 7 Pekanbaru. The validation results by three expert lecturers showed Aiken's (V) values ranging from 0.88-0.97, with instrument reliability stated as good (Cronbach's alpha = 0.815). The level of difficulty of the questions consisted of 4% easy, 84% moderate, and 12% difficult. Measurement of conceptual understanding in 50 students showed a significant difference with a significance value of 0.012 <0.05, so H0 was rejected. The assessment instrument was declared valid and reliable for buffer solution material.

Effectiveness of E-Module Circulation System Based on 8E Learning Cycle on High School Student's Critical Thinking Ability Rosiana, Yuni; Syafii, Wan; Putra, Riki Apriyandi; Futra, Dedi
Journal of Educational Sciences Vol 7. No. 3. July 2023
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.7.3.p.434-441

Critical thinking skills are skills students must have in the 21st century. These skills can improve analytical skills and make students think more carefully This study aims to determine the effect of circulation system e-module based on learning cycle 8e on high school students' critical thinking skills. This type of research is quasi-experimental, which consists of 2 classes, namely XI IPA 1 as the experimental class with treatment using e-module circulation system based on learning cycle 8e and XI IPA 2 as the control class, which uses conventional learning. Based on the results of the study, it was found that there was a significant effect of the circulation system e-module based on learning cycle 8e on students' critical thinking skills, where in the control class the average posttest score was far below the experimental class, which was 55.5 and the experimental class average posttest score was 69.5. Based on the results of hypothesis testing, a significant value (2 tailed) was obtained of 0.003 (p<0.05). The use of circulation system e-module based on learning cycle 8e has a positive effect on students' critical thinking skills.

Making an E-Pocket Book Based on the Isolation Study of Endophytic Bacteria of Laban Plants That Produce Secondary Metabolite Compounds as Enrichment Material for Natural Material Chemistry Courses Anwar, Lenny; Linda*, Roza; Adisman, Rendika; Futra, Dedi; Alimin, Masnaini
Jurnal Pendidikan Sains Indonesia Vol 12, No 4 (2024): OCTOBER 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jpsi.v12i4.40610

This research addresses the need for effective teaching materials in natural materials chemistry courses, specifically focusing on secondary metabolite compounds derived from endophytic bacteria of laban plants. The main objective is to develop a valid e-pocket book that serves as an enrichment resource for lecturers and students. This study used a research and development approach using the 4-D model, which includes the stages of defining, designing, developing, and disseminating. However, this research was limited to the development stage. The E-Pocket Book was assessed for validity through various aspects, including content feasibility, presentation, grammar, graphics, appearance, and software utilisation. Validation involved feedback from material and media validators, as well as responses from chemistry education lecturers and students. Results showed that the E-Pocket Book achieved a highly valid category with an overall average score of 98.785% across the six assessment aspects. Feedback from chemistry education lecturers showed excellent criteria, with scores of 87.50% for content appropriateness and for usefulness, and 91.67% for ease of use. Similarly, student feedback reflected high satisfaction, with scores of 86.67% for ease of use, 85% for benefits of use and 83.09% for attractiveness of presentation. In conclusion, the developed E-Pocket Book was validated as a practical and effective teaching material for secondary metabolite compounds, demonstrating its potential to enhance the learning experience in natural materials chemistry courses. This study highlights the importance of incorporating user feedback in the development process to ensure materials meet educational needs and preferences

The Effect of Learning Style on Students’ Learning Performance During the Covid-19 Pandemic Sri Wilda Albeta; Sri Haryati; Dedi Futra; Riri Aisyah; Anggi Desviana Siregar
Jurnal Tadris Kimiya Vol 6, No 1 (2021)
Publisher : Department of Chemistry Education, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/jtk.v6i1.12603

The research aims to determine the effect of learning style on students’ performance through online learning during the Covid-19 pandemic. The subjects of study are 269 chemistry education students at three universities in Indonesia. The data collection of learning style uses a Likert scale questionnaire, and learning performance is obtained from students’ grade point average. In this research, students’ learning style was divided into visual, auditorial, and kinesthetic. Data were analyzed using descriptive statistics with linear regression and ANOVA tests. The learning styles positively affect student learning performance by 4.7%, while 95.3% of other factors are not examined in this study. The learning performance of students with auditory is higher than visual and kinesthetic learning styles. Based on the inferential analysis, there is no significant difference in student learning performance based on student learning styles. Therefore, students with different learning styles have the same learning performance in online learning.

The Ureolytic Soil Bacteria Bacillus albus, a potential Agent for Biocement Linda, Tetty Marta; Rahmani, Syauqi Susana; Wati, Andini Saras; Febriarti, Bernadeta Leni; Futra, Dedi; Olivia, Monita; Juliantari, Erwina
HAYATI Journal of Biosciences Vol. 32 No. 3 (2025): May 2025
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.32.3.829-839

Concrete is a common building material and is very vulnerable to cracking caused by unstable temperature/humidity. Concrete crack repair can be done by using microorganism substitution that can produce CaCO3 (calcite) compounds that can be used as an environmentally friendly method in improving structural formation and increasing the strength and durability of concrete, one of which is using ureolytic bacteria. This study aimed to isolate and characterize ureolytic bacteria isolates and then to assess the calcite precipitation potential of ureolytic bacteria isolates from landfills. The ureolytic bacterial isolates were grown on NB-U/Ca and tap water medium. Analysis of Calcite Structure using Fourier Transform Infra-Red (FTIR), and molecular identification using 16S rRNA gene sequences. Bacterial isolate SP. 48 were able to grow and produce calcite in both media, especially in tap water medium. FTIR results showed that the precipitates produced by bacterial isolates on both mediums had strong absorption peaks, which were detected to be calcite. Molecular identification using the 16S rRNA gene sequence showed that the isolate is Bacillus albus. B. albus is a proteolytic bacterium collected from landfills that was proven to be a calcite-producing bacterium, a new finding in this study. B. albus can grow and produce calcite in a tap water medium with low pH. This finding can be used as an alternative to overcome concrete cracks and increase the strength and durability of concrete. This bacterial isolate could be developed as a biocement candidate.

Development of Multiple Representation Based Assessment Instruments to Measure Students' Conceptual Understanding of Buffer Solution Material Rehamita. S, Rehamita. S; Linda, Roza; Futra, Dedi
Journal of Educational Sciences Vol. 8 No. 4 (2024): Journal of Educational Sciences
Publisher : FKIP - Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.8.4.p.671-689

Buffer solution material was chosen in the process of developing an instrument based on multiple representations, because the buffer solution material contains many representations. Buffer solution material requires explanations in various forms of representation that can visualize the buffer solution material so that students are expected to be able to observe the symptoms that occur and analyze and draw more comprehensive conclusions. This study aims to measure students' conceptual understanding of buffer solution material based on aspects of material, language, construction, and conceptual understanding. The method used is Research and Development with the ADDIE model, involving two schools, SMAN 1 and SMAN 7 Pekanbaru. The validation results by three expert lecturers showed Aiken's (V) values ranging from 0.88-0.97, with instrument reliability stated as good (Cronbach's alpha = 0.815). The level of difficulty of the questions consisted of 4% easy, 84% moderate, and 12% difficult. Measurement of conceptual understanding in 50 students showed a significant difference with a significance value of 0.012 <0.05, so H0 was rejected. The assessment instrument was declared valid and reliable for buffer solution material.

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