Journal of Science and Science Education (JoSSEd)
Journal of Science and Science Education (JoSSEd) is a Peer Review international journal published by Postgraduate Mataram University. It is firmly established as an authoritative voice in the world of science and science education. JoSSEd publishes scholarly papers that focus on science and science education like the teaching and learning of science in school settings ranging from early childhood to university education. It bridges the gap between research and practice, providing information, ideas, and opinion. As a truly international journal, JoSSEd welcomes contributions from any country provided that the authors explain their local contexts and demonstrate the significance of their work for a global readership.
Articles
115 Documents
<![CDATA[Feasibility Analysis of Contents of Module Impulse and Momentum to Improve Student Math Skills Verbal Representation of Figures (R-VMGG) ]]>
<![CDATA[I ketut Mahardika]]>;
<![CDATA[I Wayan Sugiartana]]>;
<![CDATA[Aris Doyan]]>
<![CDATA[ Journal of Science and Science Education Vol. 2 No. 1 (2021): April ]]>
Publisher : <![CDATA[Pascasarjana, Mataram University ]]>
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DOI: 10.29303/jossed.v2i1.524
<![CDATA[This article reports on the results of the development of impulse and momentum modules to improve the Verbal, Mathematical, Image and Graphic Representation (R-VMGG) abilities of high school students in Besuki Raya. The research objective was to describe the feasibility level of the content, the impulse module and momentum of the development results. The trials were carried out on small samples and large samples, after validation by experts. The large sample trial is carried out after completing the small sample trial which is carried out in stages from all learning activities with the impulse and momentum module. Trials with small samples and large samples were carried out to investigate the impulse and momentum module drafts of the development results in improving the R-VMGG abilities of SMAN students in Besuki Raya. Respondents in the small sample trial were 30 high school students, while the respondents in the large sample trial were 150 high school students. The results showed that the feasibility level of the contents of the developed modules reached a high category]]>
<![CDATA[Investigating Problem Solving Skills and Chemistry Learning Experiences of Higher Education Base on Gender and Grade Level Differences ]]>
<![CDATA[Dwi Wahyudiati]]>
<![CDATA[ Journal of Science and Science Education Vol. 2 No. 2 (2021): October ]]>
Publisher : <![CDATA[Pascasarjana, Mataram University ]]>
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DOI: 10.29303/jossed.v2i2.632
<![CDATA[The purpose of this study was to investigate the problem-solving skills (PSS) and chemistry learning experiences (LE) of teacher candidates. 191 pre-service chemistry teacher (130 women, 61 men) were taken as the research sample using the purposive random sampling technique. The research design used a cross-sectional survey with focus group interviews. The quantitative data obtained were analyzed using the MANOVA test and while the interview data using the Patton analysis technique. The research findings show that: 1) the level of the chemistry learning experience of pre-service chemistry teacher (LE) is higher than the ability of problem-solving skills (PSS); 2) the level of ability of female chemistry teacher candidates for PSS and LE was found to be higher than that of males; (3) there are differences in PSS and LE based on grades levels, but there is no difference based on gender; 4) there is a difference in PSS and LE between freshman, sophomore, and junior grades. The findings of the interview are relevant to the results of the survey which proved that male and female students both have positive attitudes towards chemistry, however, it was found that there were differences in PSS and LE between grade level (1stgrade, 2stgrade, 3st grade). Thus, it is suggested that the learning process in universities prioritizes the development of LE and PSS in chemistry learning so as to improve the soft skills and academic achievement of prospective chemistry teachers.]]>
<![CDATA[The Potential of Seagrass Ecotourism as an Indicator of Conservation in the Coastal Waters of East Lombok ]]>
<![CDATA[Abdul Syukur]]>;
<![CDATA[Agil Al Idrus]]>;
<![CDATA[Lalu Zulkifli]]>;
<![CDATA[Mahrus Mahrus]]>
<![CDATA[ Journal of Science and Science Education Vol. 1 No. 1 (2020): October ]]>
Publisher : <![CDATA[Pascasarjana, Mataram University ]]>
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DOI: 10.29303/jossed.v1i1.643
<![CDATA[The East Lombok coast was developed for fisheries and tourism. The fishery aspect that is being developed is marine cultivation and has contributed as a source of livelihood for local communities and from the social aspect, it functions to maintain the safety and comfort of the environment. Besides, from an ecological aspect, it has benefits in preventing damage to marine ecosystems due to the use of tools and materials that are not environmentally friendly. The utilization model of the marine environment is still traditional which is oriented only to goods and not to environmental services. On the other hand, the development of nature tourism is becoming superior in the southern coastal area of Lombok Island. It spreads the seagrass ecosystem in the coastal area of Lombok across all tourist sites. However, the utilization is only from products such as fish and marine biota which have economic value. Therefore, it is necessary to innovate the utilization of the ecosystem services aspect of the field as a natural tourist attraction with the concept of ecotourism. The concept of ecotourism is a utilization model that does not interfere with natural systems or ecological systems. The uniqueness of the seagrass ecosystem with other ecosystems is its relationship with the local community tradition called "Madak". Therefore, conceptual formulations and innovations are needed in integrating the cultural values of local communities in the development of seagrass ecotourism on the southern coast of Lombok Island. The purpose of this research is to describe the ecotourism potential of seagrass beds in the study location. The results showed that the ecotourism potential of seagrass beds in the study locations included seagrass internal as seagrass beds and the diversity of seagrass species, especially from inhalers acroides and Caemodecea. Another potential is the seagrass environment for the diversity of Echinodermata and Bivalvia species which can be a tourist object favored by many tourists. Besides, the seagrass environment provides a snorkeling tourism object at high tide to enjoy the diversity of fish species and other marine organisms that use eagrass as a place to find food. The conclusion from the research is that seagrass beds in the study location are a new tourism object for tourists who come to visit the southern coastal areas of East Lombok]]>
<![CDATA[Thermozyme Amylase from Enterobacter sp Extremophiles in Bioethanol Production ]]>
<![CDATA[Gustina Indriati]]>;
<![CDATA[Ruth Rize Paas Megahati]]>
<![CDATA[ Journal of Science and Science Education Vol. 2 No. 1 (2021): April ]]>
Publisher : <![CDATA[Pascasarjana, Mataram University ]]>
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DOI: 10.29303/jossed.v2i1.698
<![CDATA[Bioethanol is an alternative fuel to replace fossil fuels due to the reduction of fossil fuels. Bioethanol is produced from starch and converted to sugar by thermozyme amylase. Thermozyme amylase produced by thermophile bacteria can be obtained from Pariangan hot springs which have a temperature of 55 °C, pH of 9.2, and have a high level of bacterial diversity. The aim of this study was to obtained isolates of thermozyme amylase-producing bacteria that have the potential for bioethanol production. The research method were bacteria isolation, amylase stability test, temperature and pH optimization, and bioethanol production. The result showed that Enterobacter sp has been isolated from Pariangan hot springs is stable up to 5 hours of incubation, temperature and pH optimum was 85 °C, pH 8.5, and fructose as a carbon source. Thermozyme amylase converts starch into sugar under optimum conditions with a yield of 9.8% bioethanol]]>
<![CDATA[Development of Physics Learning Media based on Guided Inquiry Model to Improve Students' Concepts Mastery and Creativity ]]>
<![CDATA[Susilawati Susilawati]]>;
<![CDATA[Ahmad Hardjono]]>;
<![CDATA[Christine P. Abo]]>;
<![CDATA[Lalu Muliyadi]]>
<![CDATA[ Journal of Science and Science Education Vol. 2 No. 2 (2021): October ]]>
Publisher : <![CDATA[Pascasarjana, Mataram University ]]>
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DOI: 10.29303/jossed.v2i2.711
<![CDATA[This study aims to develop learning media based on guided inquiry models to improve students' concepts mastery and creativity in physics learning in senior high schools. The learning media in question is a ripple tank to explain the characteristics of a mechanical wave. Development research with the 4D model (define, design, development, dissemination) was conducted in this study, where the learning media developed met the criteria of validity, practicality, and effectiveness in improving students' concepts mastery and creativity. Evaluation of the learning media validity is carried out through a validation mechanism where the media is validated by 3 validators (media experts), while evaluation of the practicality and effectiveness of learning media through its implementation in class involves students in two schools in Mataram City - Indonesia. The results of the study show that the learning media with the guided inquiry model are valid, practical, and effective in improving students' concepts mastery and creativity in learning physics. The results of further studies are described in this article]]>
<![CDATA[The Diversity of Major Insect Pests at Sugarcane Development Center In Dompu Distrcit, West Nusa Tenggara ]]>
<![CDATA[Muhammad Sarjan]]>;
<![CDATA[Muchlis Muchlis]]>;
<![CDATA[Irwan Muthahanas]]>
<![CDATA[ Journal of Science and Science Education Vol. 2 No. 1 (2021): April ]]>
Publisher : <![CDATA[Pascasarjana, Mataram University ]]>
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DOI: 10.29303/jossed.v2i1.712
<![CDATA[Sugar cane (Saccharum officinarum Linn.) is a tropical plant that is very important because it can be used as one of the raw materials for making sugar. The development of sugar production in the last ten years has decreased by around 1.8% per year, this is due to several factors, one of which is due to the attack of sugarcane insect pests. Therefore, research was conducted to find out the diversity of important insect pests in sugarcane plants in the center of sugarcane development in the Dompu District. This research was conducted at the Pekat Sub District of Dompu District, West Nusa Tenggara. The method used is a descriptive method with data collection techniques directly and indirectly in the field at a number of observation points. Based on the observations there were 5 species of insect pests in the research area such as Valanga nigricornis, Locusta migratoria, Ceratovacuna lanigera, Scirchopaga nivella F., and Lepidiota stigma. Insect pests with the highest population and dominance are Ceratovacuna lanigera with an average population of 70 insect/plant and a domination index is 0 .199808. Locusta migratoria has a level of damage with criteria for moderate attack intensity, it is found in sugarcane plants aged 3 months. The results of this study indicate that Scirchopaga nivella F. and Lepidiota stigma F. insect pests have the potential as important pest insects on sugarcane crops]]>
<![CDATA[Effect of Local Culture Based Learning in Science on Critical Thinking and Student Communication Skills ]]>
<![CDATA[Hikmawati Hikmawati]]>;
<![CDATA[Gunawan Gunawan]]>;
<![CDATA[Haerunisyah Sahidu]]>;
<![CDATA[Kosim Kosim]]>
<![CDATA[ Journal of Science and Science Education Vol. 2 No. 1 (2021): April ]]>
Publisher : <![CDATA[Pascasarjana, Mataram University ]]>
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DOI: 10.29303/jossed.v2i1.713
<![CDATA[Learning in every education unit in Indonesia is expected to develop good local cultural values so that it can make changes for the better in the future. In order to face future global competition, students at universities must have critical thinking and communication skills. This study aims to examine the effects of local culture-based learning in the field of Science on students' critical thinking and communication skills. The method used in this research is quantitative method with a posttest-only control group design. The subjects in this study were 58 students who attended the Study and Learning lectures at one of the universities in Mataram. Learning theories discussed through local culture-based learning for 8 meetings are behavioristic, cognitive, constructivist, and humanistic learning theories. The instruments used in this study were a test of critical thinking skills and an assessment sheet for student communication skills. Data analysis to test the research hypothesis using SPSS 25. The research showed that there were differences in critical thinking and communication skills between groups of students whose learning was based on local culture in the field of Science and groups of students whose learning was using conventional models. The level of critical thinking skills and communication skills in the group of students whose learning is based on local culture in the field of Science is higher when compared to the group of students whose learning uses conventional models]]>
<![CDATA[Development of Learning Tools and Disaster Mitigation Boxes Student Oriented Learning Model in Raising Student Awareness ]]>
<![CDATA[Syahrial Ayub]]>;
<![CDATA[Kosim Kosim]]>;
<![CDATA[I Wayan Gunada]]>;
<![CDATA[Muh. Mahrus]]>
<![CDATA[ Journal of Science and Science Education Vol. 2 No. 1 (2021): April ]]>
Publisher : <![CDATA[Pascasarjana, Mataram University ]]>
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DOI: 10.29303/jossed.v2i1.718
<![CDATA[This study aims to develop disaster mitigation learning tools in raising awareness of students in elementary schools. Research design using 4D models, namely define, design, develop, and disseminate. Disaster mitigation learning tools developed are disaster mitigation boxes, learning implementation plans, student worksheets. The data was collected with questionnaires and tests measuring students' disaster awareness. The testing phase is the stage to find out the effect of the use of disaster mitigation learning tools on increasing student awareness. Student awareness raising is determined based on N-Gain and paired t-test. The results showed the learning tools and disaster mitigation boxes developed were declared valid and reliable, worthy of use in terms of content and construction and influential in raising disaster awareness of learners]]>
<![CDATA[Increasing the Motivation and Learning Outcomes of Students through the Application of the Problem Based Learning Model in Learning Physics ]]>
<![CDATA[Desta Velly]]>
<![CDATA[ Journal of Science and Science Education Vol. 2 No. 1 (2021): April ]]>
Publisher : <![CDATA[Pascasarjana, Mataram University ]]>
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DOI: 10.29303/jossed.v2i1.719
<![CDATA[The results of the learning test show that almost more than half of the students have not been able to solve the questions well, so learning improvements or innovations are needed. Problem based learning is one of the recommended learning models in the implementation of the 2013 curriculum because this model is proven to be able to stimulate higher-order thinking skills by designing problems in real contexts. The purpose of this action research is to improve learning outcomes and student motivation in the application of the Problem Based Learning model in learning physics. The subjects of this study were students of class XI MIPA 2, Public Senior High School 12 Pekanbaru. This research is a classroom action research conducted in 2 cycles. The results of this study obtained test data on the learning outcomes of students in cycle I with absorption of 75.25%, in cycle II absorption of 81.29%, motivation of students in learning cycle I and cycle II in good categories.]]>
<![CDATA[Analysis of Cadmium (Cd) and Lead (Pb) Heavy Metal Content in Shell and Mangroves at Bima Bay ]]>
<![CDATA[Khairuddin Khairuddin]]>;
<![CDATA[M Yamin]]>
<![CDATA[ Journal of Science and Science Education Vol. 2 No. 1 (2021): April ]]>
Publisher : <![CDATA[Pascasarjana, Mataram University ]]>
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DOI: 10.29303/jossed.v2i1.726
<![CDATA[This study aims to determine the levels of heavy metals (Cd) and (Pb) in shellfishes and mangroves at Bima bay. The results showed that bivalves and mangrove tissue were analyzed for heavy metal content in the form of lead (Pb), and Cadmium (Cd) using an Atomic Absorption Spectrophotometer. From tissue analysis, it indicates that the content of heavy metals lead (Pb) in 3 species of Shellfish which showed different results; Blood shells (Anadaragranosa) of 0.756 ppm, Hiatula shells (Hiatula chinensis) 1.59 ppm, and Shells (Siliqua winteriana) 1.171 ppm. Cadmium (Cd) metals in Shells are each found; Cockle shell (Anadara granosa) of 0.802 ppm, Hiatula shells (Hiatula chinensis) 0.334 ppm and Shells (Siliqua winteriana) 0.066 ppm. The content of lead metal (Pb) in the tissue of small mangrove leaves (Ryzophora apiculata) is 3.21 ppm and the mangrove leaves (Sonnerati aalba) is 3.74 ppm. For Cd levels in small mangrove leaves (Ryzophora apiculata) is 0.41 ppm while in mangrove leaves (Sonneratia alba) is 0.24 ppm]]>
