Pengaruh Penggunaan Media Webblog Berbasis HOTS Terhadap Motivasi dan Hasil Belajar Pada Materi Laju Reaksi

This reseach goals to determine how the effect of knowing the effect of using Webblog media on the HOTS Evaluation Based Problem Based Learning Model on Motivation and Student Learning Outcomes in the Material of Reaction Rate. The research method used was an experiment that was modified as needed. The sampling technique used is by using a purposive technique where class XI IPA 4 as an experimental class is taught using Webblog Media in the Problem Based Learning model using and XI IPA 5 as a control class that is taught using Power Point Media in the Problem Based Learning learning model based on HOTS evaluation . The analysis technique used is the mean difference test, the percent increase in learning outcomes, normality test, homogeneity test and hypothesis testing. The results obtained by the average value of the experimental and control classes in the pretest data were 36.25 and 27.25. The post-test scores for the experimental and control classes were 79 and 65.5. Data on the normality and homogeneity test obtained data were normally distributed and the data were homogeneous. The correlation test for the effect of using Webblog media in the Problem Based Learning model on student motivation and learning outcomes is the value of rxy = 0.754 which means there is a positive correlation between motivation and student learning outcomes.

Pengembangan E-Magazine Reaksi Reduksi dan Oksidasi Sebagai Media Pembelajaran Kimia Kelas X SMA/MA

This development research refers to several analyzes carried out, namely performance analysis in learning, student analysis, which is a study of student characteristics based on knowledge, skills, and development. Analysis of facts, concepts, principles and needs based on current problems, namely learning from home caused by the covid-19 pandemic which requires learning media. Learning media that can meet today's learning needs are chemistry E-magazines that can be accessed anytime and anywhere with valid, practical, and effective criteria. The e-magazine is then validated first by the supervisor and three material validators and media validators. After the e-magazine is said to be valid, it is tested in learning. The development model used in this study is the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). After going through the stages of analysis, design, and development of a valid E-Magazine, it was first tested on a small group (initial field trial) and revised. After the initial revision, it was re-tested to a large group (main field trial) to see the effectiveness and practicality of the E-Magazine. The sample in this study were students of class X MIA 2 The initial field trial class amounted to 9 students and Class X MIA 3 as the main field trial class amounted to 30 students at the implementation stage of ADDIE with the object of research namely E-Magazine Reaction Reduction and Oxidation that has been developed. Collecting data using instruments in the form of observation sheets, questionnaires for assessment of material experts, media experts, teachers and students. Qualitative data analysis using a Likert scale and quantitatively based on the Post Test scores of students' learning outcomes. The results of the development obtained that the E-Magazine profile of Reduction and Oxidation Reactions met the validity criteria, showing 1.00 (very high criteria) in terms of questionnaire responses from media experts and material experts. The results of the practicality analysis in terms of the teacher and student response questionnaires obtained each percentage of 90.90% (very practical criteria) for the teacher's response to the initial field trial and 95.45% (very practical criteria) for the main field trial. In the questionnaire responses, students each obtained a percentage of 79.75% (practical criteria) for the initial field trial and 85.50% (very practical criteria) for the main field trial and the results of the effectiveness analysis based on the students' completeness in the post test. obtained a percentage of 79.75% for the initial field trial and the main field trial obtained a percentage of 86.67%. Thus, it can be concluded that the Reduction and Oxidation Reaction E-Magazine that has been developed meets the criteria of being valid, practical, and effective.

Pengembangan Modul Pembelajaran Kimia Berbasis Proyek Pada Pokok Bahasan Termokimia Untuk Kelas XI SMA

This study aims to 1) find out whether the chemistry teaching materials used in high school on thermochemistry materials have been project-based, 2) find out whether the thermochemistry learning modules developed have met project-based studies, 3) find out whether the thermochemistry teaching materials developed have met the module requirements, 4) find out whether the chemistry learning module developed on thermochemical material is in accordance with the criteria set by the BSNP, and 5) find out how students respond to aspects of the appearance, material, and benefits of project-based thermochemical modules. The research method is Research and Development (R&D) with the ADDIE development model. The sample set in this research is 1) Chemistry Lecturer at State University of Medan as many as 3 people, 2) Chemistry teacher at SMA Negeri 2 Percut Sei Tuan as many as 3 people, and 3) Class XI science students at SMA Negeri 2 Percut Sei Tuan in 1 class with 20 students. person. The results of the analysis of teaching materials in schools show that books A and C are not based on Project Based Learning with a value of 1.44. Meanwhile book B deserves to be a Project Based Learning book with a value of 2.66. The results of the validation (syntax) of the PjBL model in the module obtained a content aspect score of 3.12 with appropriate criteria. In terms of the activity aspect, it has a score of 3.30, the condition aspect has a score of 3.50, and the outcome aspect has a score of 3.50 and the criteria are very feasible. The results of the BSNP standardization obtained a content feasibility value of 2.98 with appropriate criteria; and presentation feasibility 3.36; chart feasibility 3.33; the feasibility of the language is 3.36 with very feasible criteria so that the score of the four aspects of eligibility is 3.26 with very feasible criteria. It can be concluded that the developed module is suitable for use as teaching materials.

Pengembangan E-Modul Terintegrasi Media Berbasis Adobe Flash CS6 Untuk Meningkatkan Kemampuan Pemecahan Masalah Kimia Mahasiswa

Supporting the implementation of an effective learning process cannot be separated from the use of teaching materials. Improving the quality of the learning process in higher education can be done with various strategies and one alternative that can be taken is the development of teaching materials. This study aims to develop an integrated e-module based on Adobe Flash CS6 media to improve students' chemistry problem solving skills on thermochemical material. The development model used refers to the ADDIE development model. Adobe Flash CS6-based integrated media e-module is designed to be accessible and downloadable by students online. The developed Adobe Flash CS6-based media-integrated e-module has been declared valid and proven to be effective in improving students' chemistry problem solving abilities on thermochemical materials.

Pengembangan Media Pembelajaran Berbasis Android Pada Materi Laju Reaksi

This study aims to see whether the learning outcomes of students who are taught with Android-based chemistry learning media are higher than the KKM scores, determine the feasibility of Android-based chemistry learning media developed based on BSNP standards and determine student responses to ChamRaAte media. The media feasibility data and student responses were analyzed descriptively, while the learning outcome data were statistically analyzed with the left side t test. Based on the results of data analysis, the Android-based chemistry learning media developed met the BSNP eligibility standards with an average feasibility of 3.8 with very valid criteria and did not need to be revised. The results of student responses to ChamRaAte media obtained a total percentage of 98%, which means that students received and responded to the media very well. The results of the t test using SPSS 25 obtained sig (2-tailed)> 0.05 (0.142> 0.05) and - t table <t count (-1.729 <1.531), which means that the learning outcomes of students who are taught with Android-based chemistry learning media are higher than KKM value.

Pengembangan Modul Elektronik Terintegrasi Problem Based Learning (PBL) Pada Materi Larutan Elektrolit dan Non Elektrolit

This study uses Research and Development (R&D) research methods, namely developing problem-based chemistry teaching materials on electrolyte and non-electrolyte solutions. Aims to determine the feasibility standard of chemistry teaching materials in accordance with the eligibility criteria for content, language, presentation, and graphics and see student responses to the developed teaching materials. The stages that were passed in the research started from syllabus analysis with 13 revised curriculum, book analysis, design and development of teaching materials, validation of expert teaching materials, and student responses to teaching materials resulting from the development so that problem-based teaching materials were composed of electrolyte and non-electrolyte solution materials that appropriate and in accordance with BSNP criteria.Based on the validation results of teaching materials using a modified BSNP questionnaire, in this questionnaire the aspects assessed include aspects of content feasibility, language feasibility aspects, presentation feasibility aspects, and graphic feasibility aspects. Based on the results of standardization of problem-based modules on electrolyte and nonelectrolyte solution materials by Unimed chemistry lecturers and Chemistry Teachers, overall the average content feasibility obtained a result of 3.48 with valid criteria and no need for revision, for language eligibility the results obtained 3.59 with criteria valid and does not need revision, for the feasibility of the presentation, the result is 3.73 with valid criteria and does not need revision, and for the feasibility of the graphic, the result is 3.60 with valid criteria and does not need revision. This means that the average result is 3.60. Problem-based Modules on electrolyte and nonelectrolyte solutions are valid and do not need to be revised. After the teaching materials are valid, it is recommended to conduct an assessment of students with the aim of seeing the percentage of students' satisfaction level with problem-based teaching materials developed based on aspects of appearance, material aspects, and benefits aspects. The results obtained from 30 respondents, namely the display aspect of 92.67%, the material aspect of 90.5%, and the benefit aspect of 88.17%. So that the average percentage level of student satisfaction with problem-based teaching materials that have been developed is 90.44%. This proves that students like problem-based teaching materials so that teaching materials can be used in chemistry learning as well as reading references for students.

Pengembangan Lembar Kerja Siswa (LKS) Berbasis Pendekatan Saintifik Pada Pokok Bahasan Laju Reaksi

Penelitian ini bertujuan untuk mendapatkan LKS pendekatan saintifik yang utamanya membahas tentang reaksi yang memenuhi kriteria, ketepatan bahasa, penempatan, dan sesuai menurut BSNP, menentukan respons LKS berbasis pendekatan saintifik terhadap laju reaksi dan untuk mengetahui hasil. siswa yang menggunakan LKS di SMA lebih tinggi dari KKM. Jenis penelitian yang digunakan adalah Research and Development (R&D). Populasi dalam penelitian ini adalah seluruh siswa kelas XI SMA Swata Prayatna Medan tahun ajaran 2020/2021. Sampel ditentukan secara purposive sampling dengan mengambil 1 kelas sebagai kelas eksperimen.Hasil penelitian menunjukkan: 1) LKS berbasis pendekatan saintifik pada pokok bahasan reaksi yang dikembangkan memenuhi kriteria BSNP, dengan pengolahan data yang diperoleh: sesuai = 3,70, menurut bahasa = 3,56, sesuai = 3,67, dan sesuai grafik = 3 ,75 dengan Kriteria valid dan tidak perlu direvisi; 2) Hasil angket respon siswa terhadap LKS berdasarkan pendekatan saintifik pada materi laju reaksi diperoleh rata-rata 90,41%. 3) Hasil belajar siswa yang menggunakan LKS berbasis pendekatan saintifik pada pokok bahasan Laju reaksi lebih tinggi daripada KKM.

Pengembangan Uji Instrumen Tiga Tingkat dengan CRI untuk Mendeteksi Miskonsepsi dalam Pembelajaran Reaksi Redoks

Research has been carried out to develop a Three Tier Instrument Test with Certainty of Response Index (CRI) with the aims to find out (1) analysis of teaching learning chemistry, (2) the eligibility categories in terms of expert validation, (3) the percentage of misconceptions in each sub-concepts of redox reaction, and (4) the causes of students’ misconceptions about redox reaction material. The instrument is prepared with 10 items validated contains each sub concepts. Research results show that: (1) teaching learning chemistry using curriculum 2013, various student textbooks and methods so research develop many aspects of question instruments that needed in research by interviewing the teacher of each schools, (2) the test instrument has very decent criteria with the assessment of material, language, and construction aspect, (3) the lowest percentages of students’ misconception in redox reaction’s sub-concept is oxidizing and reducing agent in reaction (54.09%) and the highest percentages is in sub-concept of autoredox concept (69.98%) with all categories of misconceptions are enough, (4) the causes of students’ misconceptions in learning redox reaction found in the material, learning source, teachers aspect. It because students were taught by different teacher, different method, and different source in learning redox reaction.

Pengembangan Lembar Kerja Siswa (LKS) Berbasis Model Pembelajaran Inkuiri Terbimbing Pada Materi Termokimia

This study aims to determine the feasibility of the worksheets student based on the BSNP criteria and to find out the responses of students to the designed worksheets. The method in this research uses the method of Research and Development (R&D) according to the Borg and Gall stages. The research subjects were worksheets based on guided inquiry learning models. The object of research is the thermochemical material. The results showed that the worksheets student that had been compiled had met the eligibility criteria according to the BSNP standards based on the content feasibility aspect, the presentation feasibility aspect, and the language feasibility aspect, which was obtained an average percentage of 88.55% with valid / feasible criteria and based on the feasibility aspect of graphic -the average percentage of 87.41% with valid / feasible criteria. As for the results of student responses to the designed worksheets is very high with an average percentage of 88.60%.

Pengembangan Handout Titrasi Asam-Basa Berbasis Android Terintegrasi Model Discovery Learning dan Soal-soal HOTS

Penelitian ini bertujuan untuk mengetahui: (1) Hasil analisis mengenai kelebihan dan kekurangan Handout titrasi asam-basa di internet, (2) Tingkat kelayakan Handout Titrasi Asam-Basa Berbasis Android Terintegrasi Model Discovery Learning dan Soal-soal HOTS, (3) Respon Siswa dan respon guru terhadap Handout Titrasi Asam-Basa Berbasis Android Terintegrasi Model Discovery Learning dan Soal-soal HOTS yang dikembangkan. Jenis penelitiannya adalah (R&D) dengan menerapkan model pengembangan 4-D oleh Thiagarajan. Tahapan tersebut adalah define, design, develop, dan disseminate. Handout Titrasi Asam-Basa Berbasis Android Terintegrasi Model Discovery Learning dan Soal-soal HOTS yang telah dikembangkan divalidasi oleh 5 orang ahli dan diperoleh skor 94,72; 96.14; 99.10; 95,00 dan 98,11% masing-masing dikategorikan sangat layak. Respon siswa dan guru terhadap Handout Titrasi Asam-Basa Berbasis Android Terintegrasi Model Discovery Learning dan Soal-soal HOTS dikategorikan sangat baik dengan persentase 91,27 dan 100%. Itu menunjukkan bahwa Handout Titrasi Asam-Basa Berbasis Android Terintegrasi Model Discovery Learning dan Soal-soal HOTS layak diterapkan untuk proses belajar mengajar.