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Chimica Didactica Acta : Journal of Chemistry and Chemistry Education
Published by Universitas Syiah Kuala
ISSN : 23384522     EISSN : 28096789     DOI : https://doi.org/10.24815/jcd
Core Subject : Science, Education,
Chemistry Education
Chimica Didactica Acta is a peer reviewed journal publishing research articles that address the topics of chemistry and chemistry education and practices. We focus on the topics but not limited to organic chemistry, inorganic chemistry, analytical chemistry, biochemistry, physical chemistry and educational chemistry and practices
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Vol 12, No 1: June 2024" : 5 Documents clear
DEVELOPMENT OF LEARNING MEDIA BASED ON ANIMATION VIDEO IN LEARNING HYDROCARBON MATERIAL AT GRADE XI SENIOR HIGH SCHOOL Fahlevi, Najla Rizani; Muchtar, Zainuddin
Chimica Didactica Acta Vol 12, No 1: June 2024
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jcd.v12i1.36913

Abstract

The impact of technological developments in education on learning process is significant. To be effective and efficient, the learning process must be developed, implemented, analyzed, and monitored. There are several students find it difficult to understand the terms, theories, and structures of carbon chain structures until they make an error; students mark in hydrocarbon quiz, with 0% student that have mark up from 61 to 100. Majority of student have mark in range 31 to 40 (39%) and least in range 51 to 60 at 4%. Teaching the structure of the carbon chain requires clear visualization, which would be helped by the teacher's exposure. It needs a proper media for teaching and visualizing how the chain's structure are. This research uses the ADDIE development model. This research begins by analyzing the problems and limitations faced in learning chemistry. The quality of animated video learning media with an assessment percentage of 84% by media experts, 91% by material experts. Based on the results of a questionnaire for 30 students, the percentage of assessment based on responses was 91% in the very good category. Based on test results on 30 students, with tcountgreater than ttable; 22.75166617 greater than 2.045 with the Ha hypothesis accepted. Class XI SMA Class XI Animation Based Learning Videos are declared valid based on expert and practitioner assessments. The results of the experts' assessments consistently categorize the animated videos being developed. The general assessment of this video is very good and usable.
ANALYSIS OF THE IMPLEMENTATION OF STEM-BASED MODULES ON PERCEPTIONS OF TEACHER AND STUDENT READINESS DURING THE INDEPENDENT CURRICULUM PERIOD (a Case study at High School No. 2 Kesuma Bangsa) Sarah, Cut; Alvina, Sirry; Imanda, Riska; Muliaman, Agus; Unaida, Ratna
Chimica Didactica Acta Vol 12, No 1: June 2024
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jcd.v12i1.37352

Abstract

This research aims to determine the readiness of teachers and students in the implementation of STEM-based modules for class X SMA Negeri 2 Kesuma Bangsa in chemistry subjects. The type of research used is qualitative descriptive research. The population in This research is all class X students at SMA Negeri 2 Kesuma Bangsa, while the sampling technique in this research is saturated sampling. Study This will be implemented in the odd semester of the 2023/2024 academic year. Data collection techniques are in the form of interviews, observations, questionnaires, and documentation. Data analysis determines the level of teacher readiness and student learning readiness in following the chemistry learning process by implementing STEM-based modules and calculating percentage values. The questionnaire then describes the results of the interviews and observations that have been carried out. The results showed that the class X chemistry teacher at SMA Negeri 2 Kesuma Bangsa is ready to teach by obtaining an average score of 95.49, included in the very good category; this is proven by the results of the interviews showing that teachers are capable of developing curriculum and competency standards graduates, and development of learning tools. Class X students' learning readiness in SMA Negeri 2 Kesuma Bangsa obtained an average score of 81.12, included in the very good category. This is proven by observation results, showing that students are ready based on physical, psychological, and material readiness indicators. It can be concluded that the readiness of chemistry teachers and class X students of SMA Negeri 2 Kesuma Bangsa are ready to implement STEM-based modules.
THE INFLUENCE OF THE PROJECT-BASED LEARNING MODEL ON STUDENT LEARNING OUTCOMES ON THE ACID-BASE CONCEPT (A Case study at Senior High School No. 2 Medan) Bangun, Prihatni Yoshepine; Eddiyanto, Eddiyanto; Munthe, Sitti Darna
Chimica Didactica Acta Vol 12, No 1: June 2024
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jcd.v12i1.33369

Abstract

The research aims to determine the effect of the project-based learning model on learning outcomes and students' responses to acid-base material. Based on observations and interviews with students and teachers, the background of this study is that chemistry education remains teacher-centered and lacks practical activities, partly due to the COVID-19 pandemic. It is hoped that this model will engage students more actively in the learning process and improve their learning outcomes. This experimental research employs a pretest-posttest control group design. The research samples were students from class XI IPA 2, who experienced the project-based learning model (experimental class), and class XI IPA 1, who followed the conventional model (control class). The instruments used in this study were tests to measure student learning outcomes and questionnaires to assess student responses to the implemented learning model. The normality test results showed a significant value of 7 for both the experimental and control classes at an alpha level of 0.05. The homogeneity test indicated a value of 1.08 at an alpha level of 0.05, suggesting the data are normally distributed and have homogeneous variance. The results of the right-sided t-test showed a significant value of 7.35, which is greater than the critical value of 1.669, indicating that t_count is greater than t_table, leading to the rejection of the null hypothesis (H0) and the acceptance of the alternative hypothesis (Ha).
PROCESSING AND CHARACTERIZATION OF OIL PALM LOOSE FRUITS AS A RAW MATERIAL FOR BIODIESEL Prihatiningtyas, Indah; Heryadi, Eko; Ramadhan, Ridho; Purnomo, Agus; Alfiyya, Alfiyya; Abdullah, Hilham
Chimica Didactica Acta Vol 12, No 1: June 2024
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jcd.v12i1.34955

Abstract

The main product of oil palm plantations is oil palm fresh fruit bunches, however there is oil palm loose fruits which is detached from the ripe fresh fruit bunch or found during the process of cutting at harvest. Biodiesel could be obtained by processing crude palm oil (CPO) with trans-esterification process, however CPO is an important source of food, especially for cooking oil. Biodiesel production as a source of new renewable energy increases, hence it could threat the food security programs. The oil palm loose fruits as an industrial waste were investigated for renewable energy sources to overcome the conflict between the renewable energy program and food security. This research found that oil palm loose fruits consisted about 55% of mesocarp (flesh of fruit) and around 45% of the seed. Increasing delay on processing of oil palm loose fruits led to decreasing of the oil, and processing delay for 12 days resulted in a significant reduction extract yield. Increasing processing delay reduced the iodine value and the study showed that oil palm loose fruits after 12 days have a high level of oil saturation and free fatty acid of CPO was 37%. Esterification followed by transesterification was conducted to synthesis biodiesel. The biodiesel was obtained with yield of 14.5%, and free fatty acid of 1.3%, while fatty acid methyl ester was achieved 70.24%. Hence, we could convert oil palm loose fruits into biodiesel as a strategy to meet the renewable energy requirement produced from non-food crops
THE DEVELOPMENT OF INNOVATIVE LEARNING MATERIAL WITH A PROJECT TO IMPROVE STUDENT'S CRITICAL THINKING SKILLS IN THE TEACHING OF REDOX TITRATION Silalahi, Gielf Justin Salisia Silrumson; Situmorang, Manihar
Chimica Didactica Acta Vol 12, No 1: June 2024
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jcd.v12i1.34956

Abstract

Self-directed learning has become popular in higher education worldwide in recent years. As a result, students may have difficulty understanding higher education standards. Therefore, innovative learning materials that are relevant and easy to understand by students and provide opportunities for developing student's character so that they are competent in developing their knowledge capacity independently through high-level thinking skills such as critical thinking. Through the research and development method using the ADDIE Model, teaching materials are created by integrating the PjBL learning model to measure product feasibility scores, students' critical thinking abilities, and know student responses and learning outcomes. Based on the validation results, the average value of the validation results obtained was 89% (valid). After testing the product, it was discovered that the student response was 87.68% (good), the average critical thinking ability score was 87.36, indicating an increase and the average learning outcomes obtained by students were from 56.80 to 87.38, indicating an increase. Overall, the integrated teaching materials for the PjBL learning model on Redox Titration material are suitable.

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