According to WHO, the permissible limit of arsenic till 1993 was 0.05 mg. /L of drinking water. In 1993, WHO modified the maximum level and brought it down to 0.01 mg./L. According to the report of School of Environment Studies of Jadavpur University (1992-1993), West Bengal has 6 districts, affected by arsenic contamination of ground water. The present paper attempts to find out the vulnerability and impact of arsenic on human being. A detailed survey was conducted at Dahapara village of Murshidabad district to assess the present condition of the area giving emphasis on the identification of sources of arsenic pollution.

Review of Research.

This research aims to develop science process skills and problem-solving abilities based on outdoor learning in junior high school. This study uses a mixed method design embedded experimental models. Data was performed in the qualitative and quantitative analysis. Qualitative data analysis is used to determine the science process skills while quantitative data analysis is used to determine the increasing problem-solving ability by using normalized gain (N gain) formula. The results show that the science process skills developed at every phase comprise of making observations, formulating hypotheses, experiment, create data, classify and analyze the data, formulating its conclusions, communicate, and apply the concepts and make predictions obtained by the average value of 75.33 in the good category. While the problem-solving ability of students based on outdoor learning also increased by 0.58 in the medium category. The conclusions of this research show that the application of outdoor learning can be teacher use as an alternative to learning, so it is quite effective in developing science process skills and problem-solving abilities.

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Developing science process skills and problem solving abilities based on outdoor learning in junior high school

Research and development are aiming to develop critical thinking skills-based modules on the respiration system materials to empower the learning outcomes; verify the effectiveness of critical thinking skills-based modules with teaching materials in schools based on student learning outcomes. Research and development method are using Borg & Gall development procedure with nine phases. Data analysis that used for the research and development are qualitative and quantitative descriptive. Research and development results show that critical thinking skills-based modules on the respiration system materials were developed according to the indicators of critical thinking skills and knowledge dimension that visualised on the objectives, materials, activities and evaluation questions which are developed to empower the learning outcomes. The result of module effectiveness test, showed by Anacova test result are FCount = 180,4 on factual, conceptual, procedural learning outcomes which are visualised in the form of multiple choice questions and FCount = 40.2 metacognitive learning results are visualised in the form of essays.

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Effectiveness of Critical Thinking Indicator-Based Module in Empowering Student’s Learning Outcome in Respiratory System Study Material

The effectiveness of enrichment test instruments design to measure students’ creative thinking skills and problem-solving

This study aimed to test the level of readability and feasibility of science comic, to knowcharacter development through a small test in some schools The research design was Research & Development, trials were using quasi-experimental pre-test-post-test experimental design The instruments to measure attitudes were: a questionnaire and observation sheet, a test used to measure comprehension of the material The results showed that learning science by inquiry-based science comic can improvecharacters and cognitive achievement of primary school students Results in the form of inquiry-based science comic can be utilized in learning science as a companion teaching materials

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Inquiry-based science comic physics series integrated with character education

Asesmen merupakan bagian integral dari proses pembelajaran sains. Aspek-aspek yang diukur dalam sains menentukan strategi pembelajaran dan jenis asesmen. Selama ini, aspek yang diukur masih terbatas pada kemampuan kognitif dan belum mengarah pada penguasaan literasi sains. Tujuan penelitian adalah untuk mengembangkan instrumen asesmen autentik berbasis literasi sains pada materi sistem ekskresi berdasarkan analisis kebutuhan disekolah. Jenis penelitian yang digunakan adalah Research and Development, dengan desain penelitian pretest posttest control group design. Subjek penelitian ujicoba skala kecil adalah 10 siswa anggota KIR SMAN 3Semarang, dan ujicoba skala luas adalah 68 siswa kelas XI IPA SMAN 3 Semarang. Produk penelitian berupa peer assessment, penilaian unjuk kerja, proyek, portofolio, sikap, dan tes. Hasil pengembangan instrumen asesmen autentik berbasis literasi sains menunjukkan bahwa instrumen asesmen valid, reliabel, efektif, dan tingkat kepraktisannya tinggi. Hal ini ditunjukkan oleh rata-rata validitas menunjukkan kriteria sangat tinggi. Keefektivan instrumen ditunjukkan dengan perubahan positif hasil belajar siswa, peningkatan indeks gain berada pada kisaran sedang, dan adanya pengaruh positif penerapan instrumen asesmen terhadap hasil belajar. Kepraktisan instrumen asesmen ditunjukkan oleh adanya respon positif siswa dan guru. Â  Assessment is an integral part of the learning process of science. Measured aspects in determining science learning strategies and types of assessment. During this time,aspects ofthe measured is limited to cognitive abilities and not lead to mastery of science literacy. The research objective is to develop authentic assessment instrument based on material science literacy excretion system based on analysis of school needs.The type of the research was Research and Development, and pretest posttest control group design. The limited-scale subjects were 10 scientific group students of SMAN 3 Semarang, and the implementation-scale subjects were 68 students of Grade XI IPA of SMAN 3 Semarang. Product research is peer assessment, performance assessments, projects, portfolios, attitudes, and test.The research analysis showed that the science literacy based authentic assessment instrument developed in the study was valid, reliable, effective, and practical. This was shown from the very high score of the validity mean. The effectiveness of the instrument could be shown from the positive changes on the studentsâ€™ study outcomes, with the gain index in medium rate, and the positive impact of the instrument implementation on the studentsâ€™ study outcomes. The assessment instrument was considered practical based on the positive responses from students and teachers.

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Pengembangan instrumen asesmen autentik berbasis literasi sains pada materi sistem ekskresi

This study aims to: develop and test the validity, legibility and effectiveness of STEM Mobile Learning Package ecosystems on studentsâ€™ science and technology literacy using R & D research design. STEM Mobile Learning Package was validated by media experts and material experts. The level of legibility is measured by questionnaire through the results of a small-scale trial of a Biology student class. The effectiveness of the application was measured in wide-scale test for biology and natural science students. Data were analyzed using descriptive quantitative.The results showed the the validity on learning package from experts showed valid in 83,6%. Some revisions are needed especially on video aspect which will be better filled with not only text but also voice. Base on data collected from 47 students who have completely filled 12 statements in questionnaire, about 78,7% students stated they could understand the questions very well. Most of students (97,8%) agreed that the use of STEM enhanced their science literacy. Percentage of students that agreed on 12 statements ranged from 74,5% to 100%. Thus those result indicated a high level of legibility Although learning packages can be studied independently, certain topics still requiredto be directly discussed. This learning package is effective on student scientific literacy ranging from 64.6 to 98.6. While the highest achievement of student technology literacy is 92 with an average of 70.32. This study concludes that STEM Mobile Learning Package Ecosystem has good validity and legibility, as well as effective on studentsâ€™ science and technology literacy.

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The Development of STEM Mobile Learning Package Ecosystem

Instrumen penilaian yang digunakan di sekolah SMA Negeri 1 Krangkeng belum berorientasi pada keterampilan berpikir tingkat tinggi. Hakikat dari biologi, tujuan pendidikan nasional dan perkembangan jaman menuntut keterampilan berpikir tingkat tinggi. Tujuan dari penelitian ini adalah untuk menganalisis instrumen penilaian di sekolah, mengembangkan instrumen penilaian untuk mengukur keterampilan berpikir tingkat tinggi, dan menguji efektivitas serta kepraktisan instrumen. Jenis penelitian ini adalah Research and development. Prosedur pengembangan produk melalui tahap penelitian pendahuluan dan pengembangan. Pada tahap pendahuluan terbagi menjadi dua, yaitu studi lapangan dan studi literatur. Tahap pengembangan, melalui beberapa bagian, yaitu 1) menyusun jenis instrumen, 2) validasi ke pakar, 3) ujicoba skala terbatas dan 4) ujicoba skala luas. Hasil dari penelitian ini adalah jenis instrumen yang digunakan di sekolah memiliki tingkatan taksonomi kognitif C1 sampai C2, kadang digunakan C3. Instrumen penilaian yang dikembangkan adalah tes esai analisis, lembar performa berpikir, dan tes problem solving. Instrumen dinyatakan valid, reliabel, dan praktis. Instrumen juga berpengaruh positif terhadap hasil belajar kognitif. Â  The type of assessment instruments used in the school were not oriented toward higher-order thinking skills. The nature of biology, national education goals and challenges of science and technology development of thinking skills require more than just the basic thinking. The purposes of this study were: 1) to analyze the assessment instruments used in the school, 2) to develop assessment instruments used to measure higher-order thinking skills, and 3) to test the effectiveness and practicality of the instrument. The type of study was Research and development. The procedure of product development were the preliminary research and development. In the preliminary research, the study was divided into two stages, they are the field of study, and literature study. The development stage started by constructing the type of instruments, validation of the expert, Â limited testing Â and extensive testing. The results of this study showed that the type of instruments used in the school were Â in the range of cognitive taxonomy of C1 and C2 and sometimes used the C3 and concept-oriented. Assessment instrument developed were essay anlysis test, the sheet of studentsâ€™ thinking performance, and problem solving test. The instruments were declared valid, reliable, and practical. The instruments were declared effective because it Â showed positive impact on learning outcomes.

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Pengembangan instrumen penilaian keterampilan berpikir tingkat tinggi materi sistem respirasi dan ekskresi

This study aims to: (1) test the effectiveness of project based learning model with scaffolding in improving mathematical communication skills, and (2) to describe mathematical communication skills and students' curiosity through the project based learning model with scaffolding. This research uses approach of mix method of sequential explanatory type. The subject of the research are the students of VIIA class of State Junior High School 18 North Halmahera academic year 2016/2017. Techniques of collecting data by using tests, observations, questionnaires and interviews. Data were analyzed by descriptive analysis and statistical test of t comparison and regression effect test. The results showed that the model of project based learning with scaffolding was effective on mathematical communication ability. Mathematical communication skills and the curiosity character of upper and middle group students are categorized as good and in the high category, while the lower group is considered poor and still in low category.
This study aims to: (1) test the effectiveness of Project Based Learning model with scaffolding in improving mathematical communication skills, and (2) to describe mathematical communication skills and students' curiosity through the Project Based Learning model with scaffolding. This research uses approach of mix method of sequential explanatory type. The subject of the research are the students of VIIA class of State Junior High School 18 North Halmahera academic year 2016/2017. Technique of collecting data by using tests, observations, questionnaires and interviews. Data were analyze by descriptive analysis and statistical test of t comparison and regression effect test. The results showed that the model of Project Based Learning with scaffolding was effective on mathematical communication ability. Mathematical communication skills and the curiosity character of upper and middle group students are categorized as good and in the high category, while the lower group is considered poor and still in low category.

Analysis of Mathematical Communication Ability and Curiosity Through Project Based Learning Models With Scaffolding

SMP Negeri 9 Magelang has implemented the pilot curriculum 2013 and the students’ habit of critical thinking in science was put as major emphasis. Thinking habits in science   is not automically easy to be implemented, and need some preparations. This study aimed to describe thinking habits of students during their learning. Survey method was implemented during the academic year 2014/2015. The science material learned was physical quantities. Data of the implemented scientific approach in science was gathered by observation sheets and questionnaires. The critical thinking habit in science was measured with questionnaire instrument of critical thinking. The population was all of grade VII students.  Sample was collected by convenience sampling technique, and grade VII B class was treated as a research sample. The data was analysed by descriptive methods. Research result showed that the  implementation of scientific approach in  science procces, on topic ‘physical quantities’ was conducted with syntact as follows : (1) students observed an orange tree picture, continued with reading  the words table of physical quantities; (2) students  asked a questions about the quantities definition; (3) students did not yet  indicate  ‘reasoning activities’  (4) students did not yet  involved in the experiment activities by student, and (5) students  presented their  understanding of  physical quantities. Student habits of critical thinking was obviously indicated by 65% students (1) conducted repetition when gathering data; (2) used the references when sharing opinions; (3) used the correct practicum tools; (4) carefully interpreted the data related; and by 70% students (1) accommodated the suggestion before giving an agreement (2) took a side in right opinion (3) asked the deep explanation to teachers (4) made the hypotesis more than one. Students presented their open thinking and carefulness in collecting reliable information. The management of science teaching was expected to be focussed on the development of high level thinking capability. Abstrak SMP N 9 Magelang telah menerapkan ujicoba kurikulum 2013 dan kebiasaan berpikir kritis siswa saat pembelajaran IPA merupakan penekanan kurikulum 2013. Pembiasaan berpikir pada pendekatan scientific tidak mudah, menantang, dan membutuhkan persiapan. Penelitian ini bertujuan untuk menganalisis kebiasaan berpikir kritis siswa pada pembelajaran IPA sesuai kurikulum 2013 yang menerapkan pendekatan scientific di SMP N 9 Magelang. Metode survei dilaksanakan di SMP Negeri 9 Magelang pada semester ganjil tahun ajaran 2014/2015. Topik IPA yang dipelajari adalah Besaran Fisika. Data tentang penerapan pendekatan scientific dalam pembelajaran IPA dikumpulkan dengan lembar observasi dan angket kerterlaksanaan. Kebiasaan berpikir kritis dalam IPA diukur dengan instrumen kuesioner berpikir kritis. Populasi penelitian ini adalah seluruh siswa kelas VII SMP N 9 Magelang. Penarikan sampel dilakukan secara convenience sampling dan siswa kelas VII B sebagai sampel penelitian. Data hasil penelitian dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa penerapan pendekatan scientific pada proses pembelajaran IPA, topik Besaran Fisika berlangsung mengikuti sintak: (1) siswa mengamati gambar pohon jeruk yang dilanjutkan dengan membaca tabel kata-kata besaran fisika; (2) siswa mengajukan pertanyaan  tentang definisi intensitas cahaya dan guru menjawab, kemudian guru memberikan pertanyaan definisi besaran; (3)  belum terlihat kegiatan menalar saat pembelajaran; (4)  belum terlihat  kegiatan percobaan yang dilakukan oleh siswa;  dan (5) siswa mempresentasikan pemahamannya tentang besaran fisika. Kebiasaan berpikir kritis siswa terlihat jelas, saat  65% siswa  (1) melakukan pengulangan saat pengumpulan data; (2) menggunakan referensi dalam berpendapat; (3) menggunakan alat praktikum yang sesuai; (4) menginterprestasi keterkaitan data; dan saat 70% siswa (1) menampung saran sebelum menyetujui; (2) berpihak pada pendapat yang lebih benar; (3) meminta penjelasan lebih lanjut kepada guru; dan (4) membuat hipotesis lebih dari satu. Siswa menunjukkan pemikiran terbuka dan siswa memiliki ketelitian dalam mengumpulkan informasi yang terpercaya. Pengelolaan pembelajaran IPA diharapkan berfokus pada pengembangan kemampuan berpikir tingkat tinggi lainnya.

Andreas Priyono Budi Prasetyo

Papers

Pengembangan instrumen asesmen autentik berbasis literasi sains pada materi sistem ekskresi

The Development of STEM Mobile Learning Package Ecosystem

Pengembangan instrumen penilaian keterampilan berpikir tingkat tinggi materi sistem respirasi dan ekskresi

Analysis of Mathematical Communication Ability and Curiosity Through Project Based Learning Models With Scaffolding

Analisis kebiasaan berpikir kritis siswa saat pembelajaran ipa kurikulum 2013 berpendekatan scientific