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JCER (Journal of Chemistry Education Research)
Published by Universitas Negeri Surabaya
ISSN : -     EISSN : 25491644     DOI : -
Core Subject : Science, Education, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Education
JCER (Journal of Chemistry Education Research) adalah jurnal peer-reviewed yang secara periodik terbit 2 (dua) kali setahun pada bulan Juni dan Desember dengan jumlah 5–8 artikel setiap kali terbit. JCER berisi tulisan/artikel hasil pemikiran dan hasil penelitian dalam disiplin ilmu kependidikan dan pembelajaran yang dikaji secara teoritis maupun empiris.
Arjuna Subject : -
Articles 194 Documents
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IMPLEMENTATION OF GUIDED INQUIRY LEARNING TO TRAIN STUDENTS SCIENCE PROCESS SKILLS OF CHEMISTRY EQUILIBRIUM MATERIALS Ningtiyas, Fienda Ayu
JCER (Journal of Chemistry Education Research) Vol 3, No 1 (2019): Volume 3 No. 1 June 2019
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v3n1.p9-14

Abstract

This study describes the implementation of guided inquiry learning modelto train students science process skills of chemistry equilibrium materials. The development models using one group pretest-posttest design. Science process skills covering formulate problems, composing hypothesis, identification of variable, planning investigation, data processing, analyze investigation, and draw a conclusion. The results showed that science process skills with impelementation guided inquiry learning model have a average value of formulate problems, composing hypothesis, identification of variable, planning investigation, data processing, analyze investigation, and draw a conclusion is 89.58; 81.25; 87.50; 76.04; 89.58; 67.71; and 86.46. Studentsscience process skills have achieved completeness because gets score ? 80 with 75% scored classical completeness
DEVELOPMENT OF INORGANIC CHEMISTRY OF TRANSITIONAL CHEMISTRY MATERIALS IN CHEMISTRY DEPARTMENT Maharani, Dina Kartika; Dwiningsih, Kusumawati; Hidayah, Rusly
JCER (Journal of Chemistry Education Research) Vol 3, No 1 (2019): Volume 3 No. 1 June 2019
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v3n1.p15-21

Abstract

Learning materials have been developed in inorganic chemistry elements of transition elements have been developed online. The flow of the development model suggested by Thiagarajan, Semmel, and Semmel is 4-D (four D Models). This model consists of 4 stages of development, namely Define, Design, Develop, and Disseminate, but in this study it is limited to the develop stage. Based on the results of observations of student activities and student response questionnaires, it can be concluded that the material in the Inorganic Chemistry of the Transition Element is feasible. 
DEVELOPMENT OF STUDENT WORK SHEET BASED ON SOFT SKILLS ON COLLOID MATERIALS CLASS XI HIGH SCHOOL Ruku, Ellen Cristy; Rusmini, Rusmini
JCER (Journal of Chemistry Education Research) Vol 3, No 1 (2019): Volume 3 No. 1 June 2019
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v3n1.p22-28

Abstract

The purpose of the research is determine the feasibility of the student worksheet based on soft skills on the subject matter of colloids in terms of content validity and construct through the results of expert validation, practicality through student activities and student responses and effectiveness through student learning outcomes and the assessment of students' soft skills. This type of research is a 4-P model development research with stages, namely, defining, designing, developing, and dessiminate, which is limited to the development stage. A limited trial was conducted to 15 students of 11th grade in SMA Negeri 1 Bangsal Mojokerto. The results showed that the worksheet developed valid in terms of content validity obtained a percentage of 91.76% and construct validity obtained a percentage of 92.49%. Practical in terms of the results of student responses to the worksheet obtained a percentage of 97.16% and supported by observations of activities students get a percentage of 92.27%. Effectiveness in terms of student learning outcomes obtained a value of ? 70 with classical completeness of 100% and the assessment of soft skills of students gained a percentage of 92.41% so that students have the ability to entrepreneurship.
LEARNING THE SELVO E-MODULE TO STIMULATE CRITICAL THINKING SKILLS STUDENTS Aisyah, Siti; Aisyah, Ratna Sari Siti; Wijayanti, Imas Eva
JCER (Journal of Chemistry Education Research) Vol 3, No 1 (2019): Volume 3 No. 1 June 2019
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v3n1.p29-34

Abstract

Critical thinking skills are needed in chemistry learning, because some chemistry is contextual and in Indonesia is still relatively low. This study aims to stimulate students critical thinking skills on the topic of voltaic cells by developing the Selvo E-module apparatus. Research and development is carried out by adapting and modifying the development model through the preliminary study phase and development with limited trials. The sample in this study were students of class XI MIPA Academic Year 2018/2019. The instruments used were valid and reliable essay test questions and questionnaire sheets. Based on the findings obtained, it can be seen that the application of the Selvo E-module can stimulate students to think critically. It is seen from the average value of students pretest at 20.14 and the average posttest value of students is 85.07.
THE EFFECTIVINESS OF CHEMICAL PRACTICUM KIT TO TRAIN SCIENCE PROCESS SKILL IN 10TH GRADE Ningsih, Rani Kurnia; Hidayah, Rusly
JCER (Journal of Chemistry Education Research) Vol 3, No 1 (2019): Volume 3 No. 1 June 2019
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v3n1.p1-8

Abstract

The purpose of this study was to obtain a chemical practicum KIT as an effective learning medium to train students' science process skills in scientific method, polar and non-polar covalent compounds, electrolyte and non-electrolyte solutions. This study uses a 4-D research model which includes the stages of defining, designing, developing, and distributing. However, in this study only limited to the development stage. The results of the research obtained showed that classical completeness in the posttest workmanship on all three materials was 100%. While the increase in learning outcomes aspects of science process knowledge and skills in the three materials are in the category of "medium" and "high". Based on the results, it can be concluded that the practicum KIT learning media is effective for training science process skills in scientific method, polar and non-polar covalent compounds, electrolyte and non-electrolyte solutions.
DEVELOPMENT OF STUDENTS’ WORKSHEET WITH MIND MAPPING STRATEGY TO IMPROVE THE STUDENTS’ CREATIVE THINKING SKILLS ON STOICIOMETRY MATERIALS Wardani, Hikma
JCER (Journal of Chemistry Education Research) Vol 3, No 2 (2019): Volume 3 No. 2 December 2019
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v3n2.p58-64

Abstract

The learning process of 2013 curriculum emphasizes on the students? skill, it also demands them to be more active and have extraordinary abilities such as creative thinking skills. The purpose of this study is to describe the feasibility of the Students? Worksheet with the mind mapping strategy to improve the students? creative thinking skills on stoichiometry material. There are tree aspects which were observed in the students? worksheets to measure the feasibility, those are content, presentation, and language. This study was conducted based on 4-D development model which has been modified into 3-D (define, design, and develop). The limited trial was implemented on 12 students of X Science 2 in Senior High School 3 Mojokerto. Furthermore, the results showed that from the three aspects of students? worksheet which were content, presentation and language were categorized to be very feasible with the percentage 91.88%;93.55%;86.67 % . The students? activities and responses were the data that obtained through the limited trials with the percentage 97.62% and 88.02% of each. Moreover, the increasing of the students? creative thinking skills and learning outcomes can be seen from the N-Gain value which were 0.74 and 0.75, and belonged to high category. Based on the results it can be concluded that the students? worksheet with a mind mapping strategy was feasible and able to improve the students? creative thinking skills and learning outcomes on stoichiometry material
THE EFFECTIVENESS OF DIRECT INTERACTION MODEL–ASSISTED MACROMEDIA FLASH ON COLLIGATIVE PROPERTIES OF SOLUTIONS MATERIAL Fatayah, Fatayah; Purwanto, Kriesna Kharisma
JCER (Journal of Chemistry Education Research) Vol 3, No 2 (2019): Volume 3 No. 2 December 2019
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v3n2.p65-71

Abstract

Abstract. The purpose of this study was to determine the effectiveness of the use of direct instruction model-assisted macromedia flash. The effectiveness of the learning model are measured by two indicators, that are the activities of students during learning and the level of completeness of student learning outcomes after learning activities. From the analysis of the data it is known that the activities of students during learning are at scores 4 and 5, the average cognitive score of students is 78 and the lowest score was 76. From the results of this study it can be concluded that the application of direct instruction model based on macromedia flash is effective to reduce student learning difficulties Class XII IPA MA Al-Khoiriyah Dalegan Panceng on the colligative properties of the solutions material. Keywords: effectiveness, direct instruction model, macromedia flash, colligative properties of solutions
THE EFFECTIVENESS OF PRACTICUM KIT AS A LEARNING MEDIA TO TRAIN SPS ON REACTION LAW Trimayanto, Sigit; Novita, Dian
JCER (Journal of Chemistry Education Research) Vol 3, No 2 (2019): Volume 3 No. 2 December 2019
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v3n2.p35-41

Abstract

This study aims to produce the Practical KIT along with its devices that are effectively used as learning media to train students SPS on the sub material of the Reaction Rate Law. The method used in this study is Research and Development design. The research instrument used consisted of a sheet of pre-test and post-test. Data analysis was carried out in descriptive quantitative to determine the effectiveness of Practical KIT along with the devices developed. The media is said to be effective if it meets 2 requirements, namely the percentage of classical completeness <85% and N-gain value <0.3. The developed media has been declared effective as indicated by the increase in the value of cognitive learning outcomes in the "Medium" and "High" categories with 100% classical completeness, an increase in the value of science process skills of students after using the Practical KIT media. "With classical completeness reaching 91.67%.
THE VALIDATY AND PRACTICALITY OF MEDIA FOR TEACHING ATOMIC BOLLS FOR CLASS X STUDENTS ON THE MATERIAL OF ATOMIC STRUBTURE indang, indang -; Sabekti, Ardi Widhia; Adriani, Nina
JCER (Journal of Chemistry Education Research) Vol 3, No 2 (2019): Volume 3 No. 2 December 2019
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v3n2.p72-77

Abstract

One effort to improve student learning outcomes is to choose teaching media that are appropriate and attract students' attention. The media developed is a three-dimensional ball teaching media.The purpose of this study is to develop three-dimensional atomic ball teaching media, to find out the validity level of three-dimensional atomic ball teaching media, to find out the practicalities of the three-dimensional atomic ball teaching media that have been developed. This research is a type of Research and Development (R & D) research using a 4D development model, namely define, design, develop, and dessiminatebut is limited to the develop stage. The teaching media developed were validated by media experts and material experts. The subject of this research trial was a chemistry teacher to find out the practicality of three-dimensional atomic balls teaching media, and 20 students of East Siantan 1 High School to find out the practicality of three-dimensional atomic balls. The method used to analyze data uses qualitative and quantitative descriptive techniques. The results showed that the validity of three-dimensional atomic ball teaching media for atomic structure material was obtained from the results of a media expert's assessment of 95.19% with very valid criteria, and the material expert's assessment was 81.23% with very valid criteria.The practicality test results were obtained from teacher responses of 92.5% with very practical criteria, and 81.41% student responses with very practical criteria. Based on the results of the study it can be concluded that atomic ball teaching media in three dimensions of atomic structure are worthy of being used as learning media by teachers and students.
IMPLEMENTATION OF COOPERATIVE LEARNING MODEL TYPE NUMBERED HEAD TOGETHER (NHT) TO TRAIN SCIENCE PROCESS SKILL IN ACID BASE MATTER OF GRADE STUDENTS AT SMAN JOGOROTO JOMBANG Rahmawati, Mulia Sri
JCER (Journal of Chemistry Education Research) Vol 3, No 2 (2019): Volume 3 No. 2 December 2019
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jcer.v3n2.p42-45

Abstract

The purpose of this research is to describe  the implementation of syntax of the numbered heads together (NHT) type of cooperative learning model and the students science process skills when applying the Numbered Heads Together (NHT) type of cooperative learning model to the acid base material. This research uses One-Group Pretest-Posttest Design. The results of the research are shown as follows: (1) The implementation of the syntax of the NHT types of cooperative learning model obtained a percentage at three meetings in the first phase of 62.5%, 75.0%, 87.0%; the second phase of 75.0%, 87.0%, and 100%; the third phase of 75.0%, 75.0%, and 100%; the fourth phase of 62.5%, 87.0%, and 100%; the fifth phase of 75.0%, 87%, 100%; the sixth phase 50%, 100%, and 100%. (2) Science process skills of students to formulate problems get n-gain values of 0.31 in the medium category, compile hypotheses to get n-gains value off 0.49 in the medium category, collecting data get n-gain values of 1,00 with a high category, analyzing the data get a n-gain value of 0.99 with a high category, and make conclusions to get a n-gain value of 0.92 with a high category.Keywords: numbered head together (NHT), science process skills, acid base.

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