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Jurnal Pijar MIPA

JPM
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Published by Universitas Mataram

ISSN : 19071744 EISSN : 24601500 DOI : -

Core Subject : Science, Education,

Biochemistry, Genetics & Molecular Biology Chemistry Mathematics Physics

Jurnal Pijar MIPA (e-ISSN: 2460-1500 & p-ISSN: 1907-1744) is an open-access scientific periodical journal published by the Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA publishes original articles on current issues and trends in mathematics-science-science education studies. In addition, this journal addresses issues concerning environmental education and environmental science. The journal scopes are: a. Physics and Physics Education b. Chemistry and Chemistry Education c. Biology and Biology Education d. Natural Science and Science Education e. Mathematics and Mathematics Education f. Environmental and Environmental Education

Arjuna Subject : Umum - Umum

Articles 22 Documents

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Search results for , issue "Vol. 17 No. 1 (2022): January 2022" : 22 Documents clear

Development of student worksheet based on MEA model of ionic equilibrium and pH of buffer solution for Senior High School Nelda Nelda; Betty Holiwarni; Lenny Anwar
Jurnal Pijar Mipa Vol. 17 No. 1 (2022): January 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

This research aims to develop a Student Activities Worksheet Based on the MEA Model on the ionic equilibrium and pH of buffer solution material for grade XI SMA/MA. Student Worksheet Based are designed according to the stage of the MEA learning model. The type of this research is research and development (R and D) about the development process of 4-D. The object of this research is student activities worksheets based on MEA. The data collection is the validation user response questionnaire. The validity of the content aspect obtained the result of data analysis, characteristics of MEA, language aspect, serve aspect, and visual aspect are 96.43%, 93.33%, 85.41%, 97.22%, 97.91% with valid category. Student activities worksheets validated by the validators tested to 25 students and three teachers. The test responses by 25 students and three chemistry teachers included very good criteria, with each score of 95% and 80.33%. Based on the result of data analysis, student activities worksheets based on MEA of ionic equilibrium and pH of a buffer solution produced are valid.

The effect of black rice (Oryza sativa L. Indica) extract to increase estrogen hormone on pre-menopause of female white rats (Rattus norvegicus) Ardiansyah Ardianyah; Mahrun Mahrun
Jurnal Pijar Mipa Vol. 17 No. 1 (2022): January 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

The study aimed to determine the estrogenic activity of extracting ethanol from black rice (Oryza Sativa L. Indica) in pre-menopausal female white rats (Rattus norvegicus). Adaptation was carried out on 20 female rats (Rattus norvegicus) experimental rats for one week with a body weight of about 200-250 g. After one week, the experimental rats were divided into five treatment groups, with each group consisting of 4 rats. The positive control group (P1) was given Ethinyl estradiol orally at a dose of 9Ãâ10-3 mg/ 200g BB in CMC-Na 1% as much as 3 mL. The negative control group (P2) was given orally CMC-Na 1% / 200g BW as 3 mL. Test Group I (P3) were given orally an extract of Black Glutinous Rice mixed with ethanolic basil leaves 96% with a dose equivalent to 1 mL of thick extract in an amount of 0.8g/200g BW in 1% CMC-Na as much as 3 mL. Test Group II (P4) was given an extract of the ethanol substance in Black Rice with a dose equivalent to 2 mL of thick extract in 1.6g/200g BW in 3 mL of 1% CMC-Na orally. Test Group III (P5) was given orally Black Glutinous Rice in a dose equivalent to 4 mL of thick extract in 3.2g/200g BB in CMC-Na 1% as much as 3 mL. The treatments were carried out orally for one estrous cycle begins during the estrus phase. Uniformity during the estrus phase was carried out using the Whitten-Method Effect. It aims to observe changes in the vagina to determine the estrus cycle by placing the male rat cage on top of the female rat cage. Conclusions from the results of this study show that the Black Glutinous Rice (Oryza Sativa L. Indica) extract treatment can increase the estrogenic activity of white rats pre-menopausal females (Rattus norvegicus). A 0.8g/200g BW dose can prolong the estrus cycle and increase vascularity and ovarian weight compared to the negative control (CMC-Na1%). The treatment with the lowest concentration was equivalent to the positive control of Ethinyl estradiol (9x10-3mg/200g BW). This test indicates that giving 96% ethanol extract of Black Glutinous Rice causes an increase in the hormone estrogen in the estrus phase, which tends to prolong the estrus cycle.

Correlation of the understanding environment concept with the character environment care for the biological education students Sirtu Filaili Sari; Jamaluddin Jamaluddin; Mahrus Mahrus
Jurnal Pijar Mipa Vol. 17 No. 1 (2022): January 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

This study aims to determine the relationship between understanding the concept of the environment and the character of caring for the environment for students of the Biology Education S1 study program. This type of research is descriptive quantitative. The research was conducted online via google Forms on biology education students who have passed environmental courses. The results showed that the correlation value between the understanding of environmental concepts and the student's environmental care character (r) was 0.601, and the coefficient of determination (r2) was 0.3612, so it can be stated that there is a positive and significant relationship. In conclusion, there is a meaningful positive relationship between understanding the concept of the environment and the value of caring for the environment in students of the Bachelor of Biology Study Program. The contribution of environmental understanding to the character of caring for the environment is 36.12%, and the remaining 63.88% is outside the understanding of environmental concepts.

Development of case-based learning model on biochemistry online learning Yunita Arian Sani Anwar; Mutiah Mutiah; Syarifa Wahidah Al Idrus; Eka Junaidi; Rahmawati Rahmawati
Jurnal Pijar Mipa Vol. 17 No. 1 (2022): January 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

The COVID-19 pandemic has changed the face-to-face learning process to online learning. It requires learning innovations that can make students more independent in exploring concepts. Case-based learning can be an alternative in the online learning process. This study aims to develop a case-based learning model in online biochemistry learning. This study uses six stages to modify the stages of development research. The results showed that the learning model developed consisted of five phases which became the syntax of the learning model developed, namely (1) Planning; (2) Orientation; (3) Organization; (4) Implementation; and (5) an evaluation developed following the results of the needs analysis. The developed syntax is described in model implementation guidelines and is equipped with learning tools. The validator's assessment shows that the model and device instructions have an index value of the expert agreement with a valid category. The test results on students showed that all the stages described in the guidelines could be implemented properly. Students gave a positive response to the implementation of case-based learning. Thus, case-based learning can be recommended for further learning.

Development of science interactive student worksheets oriented higher-order thinking skills for elementary school student Baiq Niswatul Khair; Muhammad Makki; Fitri Puji Astria; Muhammad Erfan; Hasnawati Hasnawati
Jurnal Pijar Mipa Vol. 17 No. 1 (2022): January 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

This researchÃÂ aims to develop science interactive studentsÃ¢â¬â¢ worksheets oriented to higher-order thinking skills for the fifth elementary school students. The developed student worksheet aims to provoke and familiarize students with their higher-order thinking ability. The cognitive domain of higher-order thinking skills involved is analytical skills. The 4D development model (define, design, develop, and disseminate) was used in this study. The data in this study were collected using a validation sheet. Data analysis was carried out in a quantitative descriptive. The development results showed that science interactive students worksheets oriented to higher-order thinking skills developed were valid with an average score of 3.33. Secondly, the score for the practicality of using the science interactive studentsÃ¢â¬â¢ worksheets was 3.69 and 3.38 according to teachers and students, respectively. In conclusion, the science interactive studentsÃ¢â¬â¢ worksheets oriented towards higher-order thinking skills, are valid and practical to be used by students of the fifth-grade elementary school.

Analysis of heavy metal content of cadmium (Cd) in milkfish (Chanos chanos Forsk) from milkfish farms in Bima Bay Bukhari Muslim; Khairuddin Khairuddin; M. Yamin; Kusmiyati Kusmiyati
Jurnal Pijar Mipa Vol. 17 No. 1 (2022): January 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

The research aims to analysis of the content of heavy metals cadmium (Cd) in milkfish (Chanos chanos Forsk) from the encroachment of Bima bay at year 2020. The benefit of this study is to provide information related to the content of heavy metals cadmium (Cd) in milkfish (Chanos chanos Forsk) and protect the community or consumers from heavy metal contaminants. The research was conducted in Bima Bay, namely in 2 research locations, namely Malay village, Bima City, and Palibelo, Bima Regency. This type of research is descriptive explorative researchÃ¢â¬âsampling techniques using purposive sampling. Samples of milkfish were taken directly on the pond area of 3 heads in each location. Then the sample is put in the sample box that has previously been washed clean. The research samples were then analyzed of the content of heavy metal cadmium (Cd) using Atomic Absorption Spectrophotometer tool. The results showed that at the palibelo research site, Bima Regency in PB 1 samples contains cadmium (Cd) of 30 ppm, PB 2 samples of 40 ppm, and PB 3 samples of 10 ppm. Furthermore, at the location of Malay village, Bima City on KM 1 sample of 30 ppm, on KM 2 sample of 40 ppm, and KM 3 sample of 20 ppm. The content of heavy metal cadmium (Cd) in milkfish (Chanos chanos forsk) from Bima Bay exceeds the threshold by BPOM Regulation No. 5 of 2018 is 0.1 ppm. The presence of heavy metal content cadmium (Cd) that exceeds this threshold indicates that the waters of Bima Bay have been contaminated by heavy metals Cadmium (Cd).

The effect of air quality due to household waste sewers on the growth of cayenne pepper (Capsicum frustescens L.) Suhendra Iskandar
Jurnal Pijar Mipa Vol. 17 No. 1 (2022): January 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

Research has been carried out on the effect of air pollution due to household sewage on the growth of cayenne pepper (Capsicum frustescens L.). A total of 12 samples were divided into 4 groups: 3 samples in the group placing planting locations near the sewers, 3 samples in the group placing planting locations near the sewers and giving liquid NPK fertilizer once a day, 3 samples in the group placing planting locations in places with high-quality clean air, and 3 samples in the planting location group in places with clean air quality and application of liquid NPK fertilizer once a day. The sample growth was observed for 90 days to see the difference in growth in each sample group. It was found that the samples in the group placing the planting location near the sewer, both those who were given and those who were not given liquid NPK fertilizer once a day, showed severe shrinkage symptoms in 13-14 days after planting. The samples placed in a place with clean air quality without liquid NPK fertilizer showed growth disorders in the 60 days after planting. Meanwhile, samples placed in a place with clean air quality and given liquid NPK fertilizer once a day showed fertile growth.

Formulation and evaluation liquid hand soap of celery leaf (Apium graviolens) extract Sri Idawati; Dhika Juliana Sukmana
Jurnal Pijar Mipa Vol. 17 No. 1 (2022): January 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

Washing hands with soap is one of the new habits during the COVID-19 pandemic, which is very important to continue to apply. Therefore, alternative natural ingredients are needed to manufacture liquid hand soap that is safe to use in the long term. Celery leaves contain flavonoids, saponins, tannins, essential oils, choline, lipase, and alkaloids. The content of these secondary metabolites has antimicrobial activity. This study aims to formulate liquid hand soap preparations from celery leaf extract following SNI 2588.2.2017. This research is experimental laboratory research that formulates soap preparations with concentrations of 5%, 10%, and 15% and is followed by an evaluation of the preparations based on the referenced SNI quality requirements. This study resulted in an extract yield of 37.12% with organoleptic test results in a thick liquid dosage form, characteristic odor of celery, and green color. In the evaluation test of preparations based on SNI 2588:2017, the results obtained that liquid hand soap preparations meet the requirements. PH for FI, FII, and FIII respectively 9.4, 9.5, and 9.3. In the total active ingredient test, the FI 34.6% was obtained; FII 32.2% and FIII 32.6%. Then in the ethanol insoluble material test, the FI results were 0.094%, FII 0.086%, and FIII 0.112%. Free alkali test obtained FI 0.044%, FII 0.0472%, and FIII 0.0488%. Then the total plate number test was obtained in FI, FII, and FIII preparations; namely, there was no colony growth in samples with dilutions of 10-1, 10-2, and 10-3. The formulation of liquid hand soap meets the quality requirements of SNI 2588.2.2017.

Development of laboratory work module for production of soap based on local resources as the integration of chemistry lessons with workshop and entrepreneurship Andi Maria Ulfa; Amirul Hilmi; Isna Rezkia Lukman
Jurnal Pijar Mipa Vol. 17 No. 1 (2022): January 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

The study aims to develop and test the feasibility of a locally developed soap-making module based on local resources. The research method used is research and development (R&D), which is adapted from the Borg & Gall R&D method. There are ten stages of research with three stages of testing/assessment. Stage I assessment by experts (chemistry/chemistry learning, economics/economics learning, language, and graphic design), stage II assessment by peer reviewers/colleagues, and stage III assessment by chemistry teachers and teachers of crafts and entrepreneurship. The assessment results by experts got a total score of 58, which was in the good category. The assessment results by economists/learning economics got a total score of 72, which was in the very good category. The result of the assessment by the linguist got a total score of 57 in the very good category. Finally, the result of the assessment by the graphic design expert got a score of 39 in the good category. The second stage of the assessment by five peer reviewers received an average total score of 69.6 in the good category, while the assessment results by the chemistry teacher and PKwu were 72.6 and 74 in the very good category, respectively. The overall assessment results show that the module is in the good and very good categories; therefore, the module is feasible to be developed and used further. While the results of the assessment by the chemistry teacher and PKwu, respectively, were 72.6 and 74, with a very good category. The overall assessment results show that the module is in the good and very good categories, so it can be concluded that the module is feasible to be developed and used further.

Guided inquiry learning model application to train the students analysis skills on factors that affect reaction rate materials Dhevira Aptia Firmanda; Dian Novita
Jurnal Pijar Mipa Vol. 17 No. 1 (2022): January 2022
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram

The study aims to describe the applicability of learning model implementation, student activities, learning outcomes, students' analytical skills, and student responses with guided inquiry learning models application. The method used is one group pretest-posttest design with 24 students of XI IPA class. Research shows that (1) quality guided inquiry learning percentage during two meetings is 94.44% and 95.75%, respectively. (2) relevant student activity has an average percentage of 94.64%. (3) student learning outcomes in the factor that affects reaction rate material increases with n-gain scores obtained 83.68% in the high category. (4) the results of student analytical skills on each component with a high category n-gain score are element analysis was 95.83%, relationship analysis was 58.33%, and analysis of organizational principles was 79.17%. (5) the student response had very good category results with a percentage of 98.61%.ÃÂ

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Contact Name
Saprizal Hadisaputra

Contact Email
rizal@unram.ac.id

Phone
+6287738066422

Journal Mail Official
pijarmipa@unram.ac.id

Editorial Address
Univesitas Mataram. Jalan Majapahit No 62 Mataram, Lombok, NTB. 83125. Indonesia

Location
Kota mataram,

Nusa tenggara barat

INDONESIA

Abstract

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Saprizal Hadisaputra

Contact Email rizal@unram.ac.id

Phone +6287738066422

Journal Mail Official pijarmipa@unram.ac.id

Editorial Address Univesitas Mataram. Jalan Majapahit No 62 Mataram, Lombok, NTB. 83125. Indonesia

Location Kota mataram, Nusa tenggara barat INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Saprizal Hadisaputra

Contact Email
rizal@unram.ac.id

Phone
+6287738066422

Journal Mail Official
pijarmipa@unram.ac.id

Editorial Address
Univesitas Mataram. Jalan Majapahit No 62 Mataram, Lombok, NTB. 83125. Indonesia

Location
Kota mataram,

Nusa tenggara barat

INDONESIA