scholarly journals PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK (LKPD) UNTUK MELATIHKAN KETERAMPILAN PROSES SAINS BERWAWASAN GREEN CHEMISTRY PADA MATERI ASAM BASA

2020 ◽  
Vol 9 (3) ◽  
pp. 280-289
Author(s):  
Suci Lailatul Fitriya ◽  
Mitarlis Mitarlis

Penelitian ini bertujuan untuk mendeskripsikan kelayakan LKPD yang dikembangkan untuk melatihkanketerampilan proses sains berwawasan green chemistry pada materi asam basa. LKPD ini disusunberdasarkan komponen keterampilan proses sains, yang dilatihkan yaitu mengamati, membuat hipotesis,merencanaan penelitian, mengklasifikasi, menginterpretasi data dan menyusun kesimpulan. Prinsip greenchemistry pada penelitian ini dibatasi hanya 3 prinsip yaitu prinsip no.1 tentang mencegah/mengurangilimbah, no.7 penggunaan bahan baku yang dapat diperbaharui dan no.12 mencegah/mengurangiterjadinya kecelakaan kerja. Rancangan penelitian ini menggunakan model 4-D (define, design, developdan desseminate) namun, pada penelitian ini hanya dibatasi sampai tahap develop dan dilakukan ujiterbatas terhadap 12 peserta didik kelas XI IPA SMA Negeri 14 Surabaya. Kelayakan LKPD yangdibahas meliputi: 1) validitas yang ditinjau dari validitas isi dan validitas konstruk, 2) kepraktisan yangditinjau dari aktivitas peserta didik dan angket respon peserta didik, serta 3) keefektifan yang ditinjau darites keterampilan proses sains (pretest dan posttest). Hasil penelitian menunjukkan bahwa kelayakanLKPD ditinjau dari validitas isi dikatakan valid dengan persentase 80,36% dan validitas konstruk dalamkategori sangat valid dengan persentase rata-rata keseluruhan 83,89%. Kepraktisan yang ditinjau dariaktivitas peserta didik dan respon peserta didik memperoleh hasil yang sangat praktis dengan presentase90,28% dan 95,49%. Keefektifan yang ditinjau dari hasil tes keterampilan proses sains mendapatkan ngain score berkisar antara 0,66-0,88 dengan kategori sedang-tinggi sehingga pengembangan LKPDdikatakan layak untuk digunakan dalam pembelajaran.Kata kunci: Lembar Kerja Peserta Didik (LKPD), Keterampilan Proses Sains, dan Green Chemistry. AbstractThe aims of this study is describe developed worksheet to practice science process skills oriented greenchemistry on acid base material. This worksheet was arranged based on the components of scienceprocess skills, mainly; doing observation, making hypotheses, planning research, classifying data, andmaking conclutions. The principles of green chemistry in this study were limited to 3 principles such asnumber 1 about waste prevention, number 7 about using of renewable feedstocks, and number 12 aboutconditioning for accident prevention. The design of this study is used a 4-D (define, design, develop anddesseminate), however, this study is only limited to develop and conduct a limited test of 12 students ofclass XI IPA SMA 14 Surabaya. The feasibility of worksheet discussed includes: 1) validity in terms ofcontent validity and construct validity, 2) practicality in terms of student activities and studentquestionnaire responses, and 3) effectivity in terms of science process skills tests (pretest and posttest).The results showed that the feasibility of worksheet in terms of content validity was said to be valid with apercentage of 80.36% and construct validity was said to be very valid with an overall average percentageof 83.89%. Practicality in terms of student activities and student responses obtained very practical resultswith a percentage of 90.28% and 95.49%. The effectiveness in terms of the results of the science processskills test got n-gain score ranging from 0.66-0.88 on the medium-high category so that the developmentof worksheet is feasible use in learning.Key words: Student Worksheet, Science Process Skills, Green Chemistry

2021 ◽  
Vol 4 (1) ◽  
pp. 40
Author(s):  
Aulia Amalia Ahmadiyanti ◽  
Rusly Hidayah

This study aims to measure the eligibility of a developed learning media. The media is a student worksheet (LKPD). The LKPD being developed is LKPD with a process of science skills based on the 5E Learning Cycle in acid-base material. This type of research is descriptive quantitative research using the ADDIE model. Researchers used a validation sheet as a validation instrument. The validation was carried out by three experts in chemistry education. The validation aspects that are assessed are aspects of content, presentation, language, and graphics. Based on the research results, it shows that the validity of the developed LKPD can be criticized as "very valid" in every aspect with a proportion value of 82.67% in content aspects, 86.67% in presentation aspects, 87.78% in language aspects, and 88.33% in graphic aspects. LKPD which is considered very feasible is expected to be a teaching material that can increase understanding of concepts and science process skills (SPS).


2020 ◽  
Vol 3 (2) ◽  
pp. 42
Author(s):  
Mulia Sri Rahmawati

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.


2018 ◽  
Vol 10 (1) ◽  
pp. 41-48
Author(s):  
Abu Bakar ◽  
Siti Nurjanah ◽  
Fuldiaratman Fuldiaratman

Model creative problem solving (CPS) is one model of learning centered on problem-solving skills, followed by strengthening creativity. When faced with a situation of question, students can perform problem-solving skills to select and develop a response. While the science process skills are skills that foster scientific attitude of students. By using methods practicum, students' science process skills can be seen. This study aims to determine the extent of adherence to the creativesolving model-basedproblemand the effect on students' science process skills in the acid-base material in class XI IPA 2 SMAN 10 Jambi. The approach used in this study is a mixed approach (mix method) with the type ofmodels exploratory sequentile (model order of discovery). The sampling technique was conducted by purposivesampling.There is one class that is used as a sample of grade XI 2. The research instrument used is the observation sheet enforceability of the model by teachers and students as well as students' science process skills and post-test students. Data qualitative data analysis techniques using Miles and Huberman and quantitative data usingcorrelation product momenttest. Imlementation model of creative problem solving (CPS) by teachers and students has been implemented according to the principles model of creative problem solving (CPS) each meeting. The percentage of adherence to a model by the teacher obtained a score of percentage 70.00% (Good), adherence to a model by the percentage of students obtained a score of 71.28% (Good), and the enforceability of the science process skills percentage of students obtained a score of 75.34% (Good). Correlation of adherence to the model of creative problem solving in science process skills by being categorized with the average rxy0,4150. Based on conclusion is that the learning model creative problem solving (CPS) has been performing well and the effect on the improvement of science process skills of students in the material acid-base in class XI IPA 2 SMAN 10 Jambi. Keywords: Learning Model Creative Problem Solving, Science Process Skills, Acids and Bases


2020 ◽  
Vol 3 (1) ◽  
pp. 14-23
Author(s):  
Ni Made Catri ◽  
Lilies N. Tangge ◽  
Afadil Afadil

This study aims to describe the increase in activities and student learning outcomes in learning Natural Sciences in class V Kabuyu Inpres Elementary School through the application of the science process skills approach. The method used in this research is classroom action research which consists of 4 stages, planning, implementation, observation, and reflection, with data collection techniques using evaluation tests, observation sheets, and field notes. Research subjects were 27 students. The results showed that using existing instructional devices showed an increase in student and teacher activities. Student learning activity shows the percentage score obtained on the first cycle is 70.05% in the category enough, in the second cycle showed an increase in the percentage score of 90.48% category very good, an increase of 20.43%. Teacher observation activities when applying the material in class I showed a percentage score of 78.33% in the good category, in the second cycle, the percentage score was 95.00% in the very good category, an increase of 16.67%. In the results of the analysis of evaluation tests, the first cycle students showed the percentage of classical completeness 53.70% for the percentage of classical absorption 71.06%, the second cycle showed an increase in the results of the evaluation test evaluation on the percentage of climax completeness obtained 90.74%, and the percentage of absorption laxative results showed 84.96%, KBK increased by 37.04% and DSK increased by 13.90%. Based on the acquisition of these results, it was concluded that the approach to science process skills can improve student learning activities and outcomes in the heat transfer material in class V of Kabuyu Inpres Elementary School in 2018-2019.    


2019 ◽  
Vol 4 (4) ◽  
pp. 33
Author(s):  
Riza Elpia Delita ◽  
Rahmadhani Fitri ◽  
Dezi Handayani ◽  
Heffi Alberida

The problem of research at SMPN 34 Padang is the low level of Science Process Skills of students from the results of previous observations by carrying out tests conducted in class VII SMPN 34 Padang, showing the average science process skills of students is less than 50%. This study aims to look at the effect of the Problem Solving Model on Science Process Skills in Grade VIII students of SMPN 34 Padang. In Indonesia science process skills is very minimal, because in the learning process the teacher still tends to use the lecture model and question and answer method, so the science process skills is not given to students. This type of research is quasi-experimental with research design Control Group Postest Only Design. The population in this study were eighth grade students of SMPN 34 Padang in the academic year 2018/2019. The samples from this study were class VIII6 as the experimental class and VIII7 as the control class. The research instrument used to view the science process skills of students is the Observation Sheet for Student Activities observed by the observer. Based on the results of research on the knowledge competencies of students, the tcount 4.96> t table 1.67 The Science Process Skills Activity of students in the experimental class was higher than the control class. The conclusion of the study was that the application of the Problem Solving Model had a positive effect on the Science Process Skills of Grade VIII students of SMPN 34 Padang.


2020 ◽  
Vol 8 (2) ◽  
pp. 95-112
Author(s):  
Rahmawati

The purpose of this study was to describe the science process skills of  students of  PGMI FTIK IAIN Palu on the science  laboratory of Asam Basa. This research is a descriptive study conducted at the PGMI Study Program in September to October 2019. The research subjects were students of semester 3 of PGMI in the academic year 2019/2020 who took 28 natural science courses. Data in the form of students' Science Process Skills were obtained from the student performance appraisal in the science practicum on acid-base material. The results showed that students' science process skills varied in each category. For the category of skills using tools and materials, the average percentage for the 2 indicators is 83.05% or very high. For the category of observation skills, the average percentage for the two indicators is 83% or very high. For the grouping / classification skills category, the average percentage for the 2 indicators is 79% or in the high category. Whereas for communication skills where in this category there are 3 indicators with an average indicator of 82.5 or very high. Overall by averaging the percentage of all indicators obtained the percentage for science process skills in science lab, wet acid material is 82%. This shows that the science process skills of PGMI students are very high.


2019 ◽  
Vol 7 (4) ◽  
pp. 151-160
Author(s):  
Darmaji ◽  
Astalini ◽  
Dwi Agus Kurniawan ◽  
Hanaiyah Parasdila ◽  
Irdianti ◽  
...  

Purpose: This research aims to develop basic physics practicum guidebooks based on science process skills that can assist students in training and developing students' science process skills through practicum Design/methodology/approach: This research is development research that uses the analysis, design, development, implementation, and evaluation that adopted from Branch Findings: Based on the validation results indicate that the reconstruction of basic physics practicum guidebooks based on science process skills that got good category result so that it can be used. Research limitations/implications: The results of student responses when using the reconstruction of basic physics practicum guidebooks based on science process skills are well categorized so as to improve students' science process skills Social implications: By using the reconstruction of basic physics practicum guidebooks based on science process skills of this student can have good skills so as to have experience as a prospective teacher so that later can teach it to students in science class.


2019 ◽  
Vol 13 (2) ◽  
pp. 150-158
Author(s):  
Yeni Trianah

This study aims to determine the increase in environmental awareness, response, and student learning outcomes on acid-base material usiang a community science technology approach. The method in this study uses a quasi-experimental class X2 SMK Negeri 3 Lubuklinggau. The instruments used are questionnaires and pretest postest questions. The results showed that: 1) there was an increase in students’ environmental awareness with the indicators being students’ knowledge, understanding, attitudes, and actions with the awareness indicator valur at the pretest 2,83% belonging to “low awareness”, while for the postest, the avarege the value of awareness indicator is 3,85% and belongs to the criteria of “moderate awareness”; 2) student responses also show a positive repsonse; and 3) student learning outcoms also show an increase in the precentage of 87% of studentf in the “complete learning”. Based on the results, it can be concluded that the scientific technology approach of the community can increase environmental awareness, knowledge, and student learning outcomes on acid-base materials.


2019 ◽  
Vol 7 (2) ◽  
pp. 594-603 ◽  
Author(s):  
Darmaji ◽  
Astalini ◽  
Dwi Agus Kurniawan ◽  
Hanaiyah Parasdila ◽  
Irdianti

Purpose: This research aims to develop basic physics practicum guidebooks based on science process skills that can assist students in training and developing students' science process skills through practicum Design/methodology/approach: This research is development research that uses the analysis, design, development, implementation, and evaluation that adopted from Branch Findings: Based on the validation results indicate that the reconstruction of basic physics practicum guidebooks based on science process skills that got good category result so that it can be used. Research limitations/implications: The results of student responses when using the reconstruction of basic physics practicum guidebooks based on science process skills are well categorized so as to improve students' science process skills Social implications: By using the reconstruction of basic physics practicum guidebooks based on science process skills of this student can have good skills so as to have experience as a prospective teacher so that later can teach it to students in science class.


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