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This study aims to develop (E-SWBSL) electronic student worksheets based on scientific literacy to improve student learning outcomes on acid-base materials that are appropriate for use. The principle of scientific literacy in the E-SWBSL includes several domains: the content knowledge domain, context domain, scientific phenomena domain, and attitude domain. The research method used a 4-D development model (Define, Design, Develop, and Disseminate), but the research only reached the development stage. The results of the E-SWBSL were tested on 22 students in the eleventh grade of pharmacy vocational school. The feasibility of E-SWBSL is viewed from three aspects, namely aspects of validity, practicality, and effectiveness. The results of the development of E-SWBSL found that the eligibility of the E-SWBSL was assessed from its validity was stated to be very valid with a validity percentage of 81.25%. The practicality of this E-SWBSL shows practical results with the value shown by the positive response questionnaire results of students with a percentage of 78.7%. The effectiveness of the E-SWBSL states very effective results based on a significant increase in student learning outcomes through the paired sample t-test, so that the developed E-SWBSL is declared feasible for use in the teaching and learning process, especially acid-base topics.

Penyelenggara pendidikan pada abad ke-21 di era revolusi industri 4.0 peserta didik dituntut harus memiliki keterampilan 4C dalam proses belajar. Keterampilan 4C yaitu keterampilan critical thinking, communication, creative thinking, dan collaboration. Penelitian ini bertujuan untuk mendeskripsikan keterlaksanaan pembelajaran menggunakan LKPD berorientasi mind mapping, mendeskripsikan aktivitas siswa saat pembelajaran, mendeskripsikan peningkatan hasil belajar siswa, mendeskripsikan kemampuan berpikir kreatif siswa, serta mengetahui respon siswa terhadap pembelajaran menggunakan LKPD berorientasi mind mapping khususnya pada materi redoks. Metode penelitian yang digunakan ialah one group pretest-posttest design tanpa adanya kelas kontrol. Instrumen yang digunakan adalah lembar pengamatan keterlaksanaan pembelajaran, lembar observasi aktifitas peserta didik, lembar soal pretest dan posttest, dan angket respon peserta didik. Hasil penelitian menunjukkan bahwa keterlaksanaan pembelajaran kimia pada materi redoks pada pertemuan pertama dan kedua berjalan dengan rata-rata pada pertemuan pertama sebesar 97% dan pada pertemuan kedua sebesar 97% dalam kategori baik. Hasil peningkatan pemahaman peserta didik terhadap materi redoks dibuktikan dengan perhitungan N-gain yang didapatkan 0,75 kategori tinggi. Keterampilan berpikir kreatif peserta didik dilihat melalui hasil pembuatan mind mapping yang digolongkan menjadi tiga kategori, yakni sangat baik sebesar 35,7%, baik sebesar 28,6% , dan sebesar 35,7% cukup baik.

The research aims to determine the influence of flash media on students' understanding of scientific literacy in stoichiometry. The research method used one group pretest-posttest design. The research was conducted in the tenth grade in one of the State Senior High schools in Gresik, East Java, Indonesia. The three meetings in action research were running well. However, there are obstacles where the device used is very limited, so teachers need to find the solution. Student activity during learning gets a percentage average of 87.67%. It means students were very active. Student learning outcomes show that 97% of students complete the standard minimum of completeness, 34 students complete, and one student does not complete. The Wilcoxon test shows a significantly average student learning outcomes, and the n-gain value for all students of 0.72 is relatively high. The results of the percentage of students' positive responses of 87% are classified as very good. In conclusion, learning by using flash media can be accepted by students and increase their understanding of scientific literacy on stoichiometry.

The aim of this research is to determine the feasibility of student worksheet oriented on project based learning (PjBL) to train students' creative thinking skills on acid-base material. The research method referred to the 4D development design that consisting of 4 stages including: (1) define, (2) design, (3) development, and (4) dissemination. This research was limited to development stage. The limited trial was treated to 12 students of eleventh grade of a State Senior High School. Feasibility of worksheet was reviewed from the content validity and the construct validity (aspect of language, presentation, and graph) through validation results of experts, practicality through student activity observation and student response, and effectiveness through creative thinking skills test. Creative thinking skills included four aspects: fluency, flexibility, elaboration, and originality. The data analysis used qualitative and quantitative descriptive analysis methods. The results showed that the developed worksheet was valid in terms of content validity (84.44%) and construct validity (83.63%). Practicality in terms of relevant student activities observation and student responses got percentage of 92.74% and 93.66% in very practical category. The effectiveness of creative thinking skills training in terms of the N-gain score had a percentage of 0.60 in enough category. Key words: worksheet, project based learning, creative thinking skills

Penelitian ini bertujuan untuk mendeskripsikan kelayakan LKPD berorientasi inkuiri terbimbing untuk meningkatkan kemampuan literasi sains pada materi faktor-faktor yang mempengaruhi laju reaksi. Metode penelitian pengembangan menggunakan model pengembangan perangkat yang disarankan oleh Thiagarajan yaitu model 4-D yang dibatasi hanya sampai tahap develop. Ukuran kelayakan ditinjau berdasarkan 3 aspek, yaitu: validitas, kepraktisan, dan keefektifan. Validitas ditinjau berdasarkan kriteria isi, penyajian, kebahasaan, dan kegrafikan. Kepraktisan diperoleh melalui respon dan aktivitas peserta didik selama pembelajaran menggunakan LKPD yang dikembangkan. Sedangkan keefektifan ditinjau melalui tes kemampuan literasi sains yang diujikan secara terbatas kepada peserta didik SMAN 1 Kebomas Gresik sebanyak 12 orang dengan pembelajaran menggunakan model inkuiri terbimbing. Analisis data menggunakan metode deskriptif kuantitatif. Hasil menunjukkan persentase validitas LKPD masing-masing kriteria mendapat skor diantara 80%-89,63% dan dinyatakan valid. LKPD yang dikembangkan mendapatkan respon yang positif dengan persentase sebesar 97,5% dan dinyatakan sangat praktis serta didukung aktivitas peserta didik yang sangat baik dengan persentase sebesar 98,62%. Hasil peningkatan kemampuan literasi sains tergambar dalam skor N-Gain yang diperoleh pada rentang 0,45– 1,00 dengan kategori sedang-tinggi, untuk N-Gain 3 domain yang terikat satu sama lain (konteks, pengetahuan, dan kompetensi) mendapat skor 0,77 dengan kategori tinggi, sedangkan domain sikap mendapat skor N-Gain sebesar 0,33 dengan kategori sedang, didukung dengan ketuntasan klasikal pada tes akhir memperoleh persentase sebesar 100%, sehingga LKPD dinyatakan efekif. Kata kunci: Lembar Kerja Peserta Didik, Inkuiri Terbimbing, Literasi Sains. Abstract This study intends to describe the feasibility of student worksheet with guided inquiry-oriented to improve the ability of scientific literacy on factors that influence the reaction rate matter. The development research method uses the device development model suggested by Thiagarajan which is a 4- D model that is limited to the develop stage. Feasibility measure were reviewed based on 3 aspect, namely: validity, praticality, and effectiveness. Validity is reviewed based on content, presentation, linguistic, and graphic criteria. Praticallity is obtained trough the respones and activitiesof student during learning using the developed student worksheet. While effectiveness is reviewed trough test of scientific literacy skills that were tetsted limited to 12 students of Senior High School 1 Kebomas Gresik by using the guided inquiry model. Analysis of the data uses quantitative descriptive methods. The results show the percentage of student worksheet validity of each criterion scores between 80% -89.63% and declared valid. The developed student worksheet received a positive response with a percentage of 97.5% and was declared very practical and supported by very good student activity with a percentage of 98.62%. The results of increasing scientific literacy ability are illustrated in the N-Gain score obtained in the range of 0.45–1.00 in the medium-high category, for N-gain 3 domains that are bound to each other (context, knowledge, and competence) get a score of .,77 with a high category, while the attitude domain received an N-gain score of 0.33 in the medium category, supported by classical completeness in the final test, getting a percentage of 100%, so that the student worksheet was declared effective. Key words: Student Worksheet, Guided Inquiry, Scientific Literacy.

Penelitian ini bertujuan untuk mengetahui kelayakan media chemistry pocket book dengan strategi mind mapping. Minat baca peserta didik pada pocket book diharapkan dapat menunjang kelayakan pocket book yang dikembangkan. Desain penelitian yang digunakan mengacu pada model pengembangan 4-D (define, design, develop, dan disseminate), namun hanya dilakukan sampai tahap develop dan dilakukan uji coba terbatas terhadap 16 peserta didik kelas XI MIPA SMAN 1 Kebomas Gresik. Kelayakan pocket book yang dibahas meliputi validitas, kepraktisan, keefektifan, serta minat baca peserta didik terhadap pocket book. Media pocket book dikatakan valid, praktis, dan efektif jika didapatkan hasil persentase mencapai skala pengukuran ≥61%. Hasil penelitian menunjukkan bahwa kelayakan pocket book ditinjau dari validitas isi dan validitas konstruk dinyatakan sangat valid dengan persentase berturut-turut 87,78% dan 81,86%. Kepraktisan ditinjau dari aktivitas dan respon peserta didik memperoleh hasil yang sangat praktis dengan persentase 92,89% dan 97,50%. Keefektifan ditinjau dari peningkatan hasil belajar peserta didik dengan nilai N-gain sebesar 0,80 dengan kategori sangat tinggi, sehingga media chemistry pocket book yang dikembangkan dinyatakan layak untuk digunakan dalam pembelajaran. Minat baca peserta didik ditinjau dari angket minat baca peserta didik dengan persentase hasil 84,09% dengan kategori sangat kuat yang didukung dengan hasil belajar peserta didik yang meningkat. Kata kunci: pocket book, strategi mind mapping, minat baca peserta didik. Abstract The aims of this research to determine the feasibility of a chemistry pocket book media with mind mapping strategy. Students reading interest in a pocket book is expected to support the feasibility of a developed pocket book. The research design used the design that refers to the 4-D development model (define, design, develop, and disseminate), but in this study carried out until the develop phase only. Limited trials are conducted on 16 students of class XI MIPA SMAN 1 Kebomas Gresik. The feasibility of the pocket book was discussed covered validity, practicality, and students reading interest about pocket book. Pocket book media is said to be valid, practicality, and effectiveness if the results of scale value obtained percentage at least of 61%. The result showed that the feasibility of the developed pocket book in terms of content and construct validity was stated to be very valid with a percentage of 87,78% and 81,86% respectively. Practicality in terms of the activities and responses of students get very practical results with a percentage of 92,89% and 97,50%. Effectiveness in terms of improving student learning outcomes with an N-gain score of 0,80 on very high category, so that the developed chemistry pocket book media is feasible and suitable for use in learning. Increasing students reading interest in terms of the questionnaire with percentage 84,09% on very strong category that is supported by increasing student learning outcomes. Key words: pocket book, mind mapping strategy, students reading interest

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

Penelitian ini bertujuan untuk mendeskripsikan penerapan model pembelajaran kooperatif tipe Think PairShare (TPS), aktivitas peserta didik, hasil belajar, keterampilan komunikasi, dan respon peserta didik.Desain penelitian yang digunakan adalah One Shoot Case Staudy dan One Group Pretest-Postetst Designdengan subyek penelitian peserta didik kelas XI MIA 6. Hasil dari penelitian yang telah dilakukansebagai berikut: (1) Keterlaksanaan pembelajaran menggunakan model kooperatif tipe TPS mendapatkanpersentase rata-rata secara berurutan pada pertemuan pertama sampai dengan ketiga sebesar 89,2%,92,9%, dan 97,9%, dengan kriteria sangat baik (2) Aktivitas relevan peserta didik selama tiga kalipertemmuan memperoleh persentase sebesar 94,82%, 96,87%, dan 97,52% (3) Hasil belajar secaraklasikal memperoleh persentase 100% dengan skor rata-rata posttest sebesar 85,17. Peningkatan hasilbelajar dengan kategori tinggi sebanyak 35 peserta didik dan kategori sedang satu peserta didik (4)Kuantitas komunikasi selama tiga kali pertemuan diantaranya bertanya memperoleh persentase 13,89%,19,44%, dan 25% dengan kategori kurang baik dan berpendapat memperoleh persentase 30,56%, 41,67%,dan 63,89% dengan kategori cukup baik. Kualitas komunikasi selama tiga pertemuan diantaranyabertanya dengan kategori cukup baik memperoleh persentase 25%, 50%, dan 25%. Kualitas berpendapatdengan kategori baik memperoleh peresentase 30,77%, 46,15%, dan 23% (5) Respon peserta didikmengenai pembelajaran dengan model pembelajaran kooperatif tipe TPS untuk melatihkan komunikasipeserta didik memperoleh persentase rata-rata 93,89% dengan kategori sangat baik.Kata kunci: TPS, Keterampilan komunikasi. AbstractThie aims of the research are to describe the implementation of cooperative learning model, Think PairShare (TPS) type, student activities, learning outcomes, communication skills, and student response. Theresearch design was used one shoot case study with one group pretest-postetst design. The researchsubjects were students class XI MIA 6. The results of the research: (1) The implementation of cooperativelearning using TPS type obtain an average percentage sequentially at the first to third meetingrespectively 89.2%, 92.9%, and 97.9%, on very good criteria (2) The relevant activities of students duringthe three meetings obtains a percentage of 94.82%, 96.87%, and 97.52% (3) Classical learning outcomesobtain a percentage of 100% with an average posttest score of 85.17. Increasing of learning outcomeswith a high category of 35 students and the medium category of one student (4) Quantity ofcommunication during three meetings including questions communication skills obtaining a percentage of13.89%, 19.44%, and 25% with the category of unfavorable, and the quantity of opinion obtains thepercentage of 30.56%, 41.67%, and 63.89% with a fairly good category. The quality of communicationduring three meetings including question in fairly good category obtains a percentage 25%, 50%, and25%. The quality of opinion in good category obtaining a precentage of 30,77%, 46,15%, and 23% (5)Student responses regarding learning with the type of cooperative learning model TPS to train students'communication obtaining an average percentage of 93.89% on very good category.Keywords: TPS, Communication skills

Penelitian ini bertujuan menghasilkan LKPD berwawasan green chemistry untuk meningkatkan kemampuan literasi sains peserta didik pada materi larutan elektrolit dan non elektrolit yang layak. Prinsip-prinsip green chemistry yang dikaji dalam penelitian ini terbatas pada prinsip green chemistry no 1, 7, dan 12. Metode penelitian pengembangan menggunakan model 4-P (pendefinisian, perancangan, pengembangan, dan penyebaran) dan dibatasi hanya sampai tahap pengembangan. Uji coba terbatas dilakukan kepada 12 peserta didik di kelas X IPA 6 SMA. Pengembangan LKPD dinyatakan layak apabila memenuhi tiga aspek, meliputi aspek validitas, kepraktisan, dan keefektifan. Dikatakan valid, praktis, dan efektif jika didapatkan hasil persentase ≥61%. Hasil pengembangan LKPD disimpulkan bahwa kelayakan LKPD pada aspek validitas terdiri dari dua hal, yaitu validitas isi yang memperoleh persentase 79,75% yang berada pada kriteria valid dan validitas konstruk mendapatkan persentase 82,84% dengan kriteria sangat valid. Kepraktisan LKPD ditinjau dari observasi aktivitas dan angket respon peserta didik yang masing-masing memperoleh hasil praktis sekali dengan rata-rata persentase sebesar 93,05% dan 94,79%. Aspek keefekifan ditinjau dari hasil tes kemampuan literasi sains yang memperoleh nilai N-Gain sebanyak 0,84 yang berada di kategori tinggi, sehingga LKPD yang dikembangkan dinyatakan layak untuk digunakan dalam proses belajar mengajar.Kata kunci: Lembar kerja peserta didik, Literasi Sains, dan Green Chemistry. AbstractThe aims of the research to produce feasible student worksheet with green chemistry insight to increase science literacy ability of student in matter of electrolyte and non electrolyte solution. The green chemistry principles that studied in this research were limited to principle number 1, 7, and 12. This research method was used development research design of 4-P (define, design, develop, and desseminate) and only limited on develop stage. Limited test was conducted to 12 students in the class X IPA 6 SMA.. The results of the developed student worksheet concluded that the feasibility of student worksheet if it meets two aspects, namely validity, practicality, and effectiveness aspects. Said to be valid, practical, and effective if the percentage results are obtained ≥61%. Feasibility student worksheet in the validity aspect consists of two things are content validity obtain percentage of 79,75% which is in the valid criteria, and construct validity get percentage of 82,84% with very valid criteria. Practicality of student worksheet in terms from observation of student activities and student response questionnaire obtained very practical results with a percentage of 93,05% and 94,79%. Effectiveness aspect in terms from the results of improving science literacy ability indicated by N-gain score of 0.84 which is in the high category, thus the developed of student worksheet is stated feasible for be used in teaching and learning process.Key words: Student Worksheet, Science Literacy, and Green Chemistry.

New Inquiry-Based Learning (NIBL) was developed to improve students’ multiple higher-order thinking skills (MHOTS), such as thinking critically, analytically, creatively, and practically (CACP). This study aimed to examine the increase of students’ MHOTS ability, their perceptions of the NIBL model, and the contribution of the NIBL model to the learning outcomes. A quasi-experiment of the nonequivalent control group design was implemented in this study. Research subjects were university students majoring in chemistry education and enrolling in the Organic Chemistry course. The experiment and the control groups consisted of 34 and 32 students, respectively. The collected data were analyzed by using t-test and ANCOVA procedures. N-Gain scores were calculated to measure the differences in the increase in learning outcomes. Eta square values measured the contribution of NIBL. The results of this study revealed that there were differences in the learning outcomes of the experiment and control group. The CACP thinking skills and the mastery of organic chemistry concepts of the experiment group increased significantly. The N-Gain scores of practical thinking skills aspect were on medium category, and for critical, analytical, and creative thinking, as well as for mastery of organic chemistry concepts were on high categories. For the control group, the N-Gain scores of all categories were on low or medium categories. The NIBL model effectively improved the prospective chemistry teachers’ M-HOTS in terms of CACP thinking skills and contributed significantly to the increase in the students’ mastery of organic chemistry concepts.

The aim of this research is producing student worksheets STEM-oriented with PjBL model of electrolyte and non-electrolyte matter by utilizing surrounding materials. This study used 4-D development model (four-D model), which is a development model consisting of 4 main stages: Define, Design, Develop, and Disseminate. This research was limited to the develop stage and limited trials were carried out on 9 students of SMAN 1 Gedangan Sidoarjo. The feasibility of student worksheets is seen based on aspects of validity, practicality, and effectiveness. This research shows the results of the validity student worksheets on the content criteria as 85.84% and the construct validity of 86.56% on very good category. The results of students' responses to the student worksheets obtained a percentage of 96.67% on very practical category, observation of the first to the third meetings obtained an average percentage of 90.65% on very practical category. The results effectiveness of the student worksheets obtained an average N-Gain score of 0.83 with a high category which proved that the learning outcomes of students have increased on the tests before and after learning to use student worksheets.

This study aims to describe the feasibility of the student worksheet developed in improving critical, creative, collaborative, and communicative thinking skills of students on acid-base material by using natural product. The student worksheet developed refers to the project-based learning model, which is integrated to science, technology, engineering, and mathematics (STEM). Method of this study uses a 4-D model (define, design, develop and disseminate), which is limited only to the development stage, and limited trials are carried out to nine students at senior high school. The feasibility of student worksheet is viewed from three aspects, namely validity, practicality, and effectiveness. The validity is viewed from the results of content and construct validity. The results obtained on each criterion show that the percentage score of 92.95% and 91.15% on very good category. The student worksheet's practicality in terms of activity observation and student response for each component obtained a percentage score of 95.18% and 88.09% on very practical category. The student worksheet's effectiveness in terms of the completeness of student learning outcomes showed an increase in the average N-Gain score of 0.84 on very high category and declared effective. Thus, the feasibility of the developed student worksheet in terms of all aspects such as percentage of scores obtained ≥ 61% in the aspects of validity, practicality and N-gain ≥ 0.3 in the aspect of effectiveness. So, the developed students worksheet oriented to STEM with PjBL model on acid base matter by using natural product is feasible for use in the learning. Keywords: acid-base, PjBL, STEM, student worksheet

Student worksheets are needed to support the learning process that improves student's scientific literacy ability. This study aims to determine the feasibility of student worksheets with science literacy oriented on hydrolysis matter by utilizing surrounding materials as an alternative practicum activity in pandemic era. Research design was used the 4-D model limited to the developing stage with nine students of senior High School as research subjects. The student worksheet's feasibility is viewed from three aspects: validity, practicality, and effectiveness. The student worksheets that developed is feasible if it gets ≥ 61% on the validity and practicality aspects and the N-gain is ≥ 0.3 for the effectiveness aspect. In the validity aspect, the score was 97.20% and 97.00% for the content and construct validity criteria, on very good category. Practicality is viewed from the student response questionnaire results that get an average percentage of 97% and it’s supported by the results of student’s activity observations that get an average percentage of 92.84% on very practical category. The effectiveness aspect in improving science literacy ability indicated by the N-gain score average of 0.88, which is in the high category. Thus the student worksheets developed is feasible for use in the learning process.

The learning process of 2013 curriculum emphasizes on the students’ skill, it also demand s 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

Community Service Activities (PKM) have been carried out regarding the management of chemical education laboratories in the form of training. The training was given to teachers of Blitar Regency MGMP members. The training activities aimed to increase teachers' knowledge about the management and management of the Chemistry Education Laboratory. The implementation method started from preparation and planning, implementation and evaluation. The results of the training showed an increase in participants' understanding of the management of chemical laboratory. Training activities can be carried out well, and receive positive responses from participants. As many as 67% of participants sent a report on the implementation of laboratory management tasks as a post test in their respective schools. Related to the implementation of the evaluation of the training showed a positive response as indicated by the dominant percentage in the positive (very good and good) total answer statements between 70-90%. Judging from its total usefulness, 89% stated that training activities were very useful and beneficial.