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Published by Universitas Tadulako

ISSN : 02163144 EISSN : 2776799X DOI : -

Core Subject : Science, Education,

Biochemistry, Genetics & Molecular Biology Chemistry Education Mathematics Other

The aim of this journal is to provide a venue for academicians, researchers, and practitioners for publishing original research articles or review articles. The scope of the articles published in this journal deal with a broad range of topics about mathematics and science in the field of mathematics, physics, biology, and chemistry, and then mathematics and science education in the fields of curriculum, instruction, learning, preparation of teachers, and environmental education.

Arjuna Subject : Ilmu Sosial - Pendidikan

Articles 87 Documents

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Analisis Vitamin C Pada Buah Rambusa (Passiflora foetida L.) Karmila Karmila; Siti Nuryanti
Media Eksakta Vol 17 No 1 (2021)
Publisher : Universitas Tadulako

The rambusa plant (Passiflorafoetida L) grows wild and vines. The fruit is small round green when it is raw and light yellow when the fruit is ripe. Rambusa fruit contains useful substances for improving people's nutrition, one of them is vitamin C which is needed by human as a source of antioxidants. This study aimed to determine the levels of vitamin C in raw and riperambusa fruit extracts. The vitamin C levels were analysed by iodimetric titration. The results obtained vitamin C levels in raw rambusa fruit was 1.31 mg/g and in the ripe was 2.21 mg/g, respectively. This data shows that vitamin C levels in rambusa fruit increase based on the level of maturity.

Pengaruh Model Pembelajaran Inkuiri pada Materi Larutan Penyangga Terhadap Hasil Belajar Siswa SMA Rosida Rosida; Ratman Ratman
Media Eksakta Vol 17 No 1 (2021)
Publisher : Universitas Tadulako

This study aimed to determine the effect of the inquiry learning model on the learning outcomes of student SMAN 1 Banawa Tengah on buffer solution material. This type of research was a quasi-experimental, with a nonequivalent control group design. The sample used in this study was students of class XI IPA 1 as an experimental class with 34 students and class XI IPA 2 as a control class with 34 students. Testing of the research data used 2-party t-test with prerequisite tests, normality and homogeneity tests. The results of data analysis obtained, the average value of the experimental class was 75.5 and the control class was 66.97. The results of hypothesis testing with independent sample t test obtained that sig value (p) = 0.010 with the test criteria α = 5% (0.05), then H0 was rejected and H1 was accepted, so it can be concluded that the inquiry learning model influences students’ learning outcomes.

Penentuan Kadar Natrium (Na) dan Kalsium (Ca) Pada Air Laut Desa Posona Burhan Burhan; Suherman Suherman; Paulus Hengky Abram
Media Eksakta Vol 17 No 1 (2021)
Publisher : Universitas Tadulako

It has been done a study on the determination of sodium (Na) and calcium (Ca) levels in seawater at Posona Village. The aims of this study were to determine the levels of sodium (Na) and calcium (Ca) in seawater in Posona village. The tools used were an atomic absorption spectrophotometer (AAS) and a flame photometer. Seawater samples were taken in the morning and afternoon in 3 distance points: 50 meters, 100 meters, and 150 meters from the edge of the land surface of the seashore. The level of sodium (Na) was measured at wavelengths of 589 nm while calcium (Ca) at a wavelength of 422.7 nm. The results of the study obtained the sodium levels in the morning samples with a distance of 50 m, 100 m, and 150 m amounted of 18.076 mg/L, 18.395 mg/L, and 18.715 mg/L. While the afternoon samples for the sodium (Na) levels was 18.475 mg/L, 18.742 mg/L, and 18.249 mg/L, respectively. The results of the analysis of calcium levels in the morning samples were 8.431 mg/L, 8.8 mg/L, and 7.661 mg/L, whereas in the afternoon for calcium (Ca) levels were 9.415 mg/L, 9.231 mg/L, and 7.692 mg L, respectively.

Pengaruh Model Brain Based Learning (BBL) Terhadap Hasil Belajar Siswa Kelas XI pada Materi Laju Reaksi Hikmah Hasan Basri; Sri Mulyani Sabang; Minarni Rama Jura
Media Eksakta Vol 17 No 1 (2021)
Publisher : Universitas Tadulako

This study aimed to determine the influence of Brain Based Learning (BBL) model toward learning outcomes of chemistry in grade XI at SMA 7 Palu. The method used was a quasi-experiment with pretest-posttest control group design. Sampling was done by purposive with the sample of class XI Science 2 as the experimental class and class XI Science 5 as the control class. Data of students’ learning outcome was tested using non-parametric statistical analysis, i.e the Mann-Whitney test (U-Test). Analysis of the data obtained the value of students’ learning outcomes in the experimental class (x ̅_1) was 89.16 with a standard deviation of 10.96, while in the control class students the (x ̅_2) value was 56.47 with a standard deviation of 11.50. Hypothesis testing obtained a Zcount value was 5.68 which was in the acceptance area of H1, so tha H1 was accepted and H0 was rejected. This mean that the average score of students’ learning outcomes of the experimental class was not the similar to the control class. This study concluded that the Brain Based Learning (BBL) model influenced students’ learning outcomes on reaction rate at SMAN 7 Palu..

Peningkatan Kemampuan Guru Produktif dalam Melaksanakan Pembelajaran Teaching Factory Melalui Workshop di SMK Negeri 7 Palu ashar ashar
Media Eksakta Vol 17 No 1 (2021)
Publisher : Universitas Tadulako

The motivation for this study was the low ability of productive teachers to carry out the learning process utilizing the Teaching Factory learning model at SMK Negeri 7 Palu. The teaching learning approach is appropriate for use in SMK since it produces graduates who are competent and ready to work. The purpose of this project is to use a workshop to increase the ability of productive teachers to apply learning using the Teaching Factory approach. The focus of this study is a successful teacher at SMK Negeri 7 Palu, which has a total of 12 students. This school action research was conducted in two cycles, with each cycle going through the planning, implementation, observation, and reflection stages. Data in cycle II increased with an average of 94 (A) and 91.67% completeness percentage. As a result of the training, productive teachers at SMK Negeri 7 Palu will be better able to execute Teaching Factory learning.

Penentuan Kadar Total Flavonoid Kunyit Putih (Curcuma zedoria Rosc.) dengan Variasi Jenis Pelarut Evayana Evayana; Sitti Aminah
Media Eksakta Vol 18 No 1 (2022)
Publisher : Universitas Tadulako

Determination of Total Levels of White Turmeric Flavonoids (Curcuma zedoria Rosc.) with Variation of Solvent Types. White turmeric (Curcuma zedoria Rosc.) is a herbal plant that has many health benefits in healing several diseases. It can grow wild in the open with moist soil. The purpose of this study was to determine the total levels of white turmeric flavonoids with various types of solvents. The solvents used in were water and ethanol. The quantitative test of flavonoids in the White Turmeric extract used a quercetin standard solution curve. The samples were analyzed by UV-Vis spectrophotometry at a maximum wavelength of 435 nm. The average yield obtained in the water extract was 0,073% and 0,102% in the ethanol extract. Keywords: Flavonoids, White Turmeric, UV-Vis Spectrophotometry

Identifikasi Senyawa Metabolit Sekunder Pada Batang dan Daun Lamun (Seagrass) di Teluk Palu Elsa RN Taminggu; Tahril Tahril
Media Eksakta Vol 18 No 1 (2022)
Publisher : Universitas Tadulako

This study aims to determine the content of secondary metabolites in the stems and leaves of seagrass (Seagrass) found in Palu Bay. The method used in this study is the screening method. The samples used were stems and leaves of seagrass species Enhalus acoroides, Thalasia hemprichii, and Sringodium isotifolium. The types of compounds identified in this study were alkaloids, flavonoids, steroids, triterpenoids, saponins, and tannins. Before the qualitative test on the sample, maceration was carried out for 24 hours with ethanol as a solvent. The results obtained were the type of seagrass Enhalus acoroides, the stems contain alkaloids, flavonoids, triterpenoids, and tannins, the leaves contain alkaloids, flavonoids, steroids, saponins, and tannins. Syringodium isoetifolium seagrass contains alkaloids, titerpenoids, saponins, and tannins, the leaves contain alkaloids, steroids, and tannins. Seagrass Thalasia hemprichii contains alkaloids, flavonoids, titerpenoids, and tannins, the leaves contain alkaloids, flavonoids, steroids, and tannins. Thalasia hemprichii and Sringodium isotifolium.

Kandungan Mikroplastik pada Saluran Pencernaan Ikan Katombo (Rastrellinger kanagurta) dari Teluk Palu dan Pemanfaatannya sebagai Media Pembelajaran Moh Dhuhri Surya Wirawan; Fatmah Dhafir; I Made Budiarsa; Gamar Binti Non Shamdas
Media Eksakta Vol 17 No 2 (2021)
Publisher : Universitas Tadulako

Microplastics are plastic pieces smaller than 5 mm. This study aims to describe the mikroplastic content in the digestive tract of Mackerel fish (Rastrellinger kanagurta) arising from the Palu Bay, and its use as a learning media. Samples in this research are some 10 % of the catch fishermen. Technique data collection was carried out using a technique analysis of the stomach contents. Result of the research are that abundance highest on station I with 2,2 particles, station II 0,83 particles, and in stations III 1,5 particles. Validated of video by team validator obtained to 76.86 %, video can be described as learning so that it can be used as a Learning media.

Penentuan Kadar Besi dan Kesadahan pada Sumber Air di Kelurahan Besusu Tengah Kecamatan Palu Timur Abdurrahman Mujahida; Sitti Aminah
Media Eksakta Vol 18 No 1 (2022)
Publisher : Universitas Tadulako

This study aims to determine whether the analyzed clean water meets the quality standard requirements set by PERMENKES RI No. 492 of 2010. The parameters measured in this study were pH, odor, temperature, color (in-situ testing) as well as iron and hardness which were tested ex-situ using Atomic Absorption Spectrophotometry and Complexometric Titration. The results of this study are the springs on the S. Parman road for the parameters of pH, color, hardness, and iron, respectively 8.26 pH; colorless; 120 mg/L; and 0.129 mg/L, where the results met the requirements but for the odor (fishy) and temperature (36oC) parameters did not meet the quality standards. Meanwhile, the water sources in the Besusu Tengah Village, which existed before the earthquake in Palu City, had met the requirements set by the government

Analisis Kemampuan Berpikir Kritis Siswa Tentang Materi Larutan Elektrolit dan Non Elektrolit Regina Kristia Ningrum; Ratman Ratman
Media Eksakta Vol 17 No 2 (2021)
Publisher : Universitas Tadulako

The purpose of this study was to describe students' critical thinking skills on the material of Electrolyte and Non-Electrolyte Solutions in class X SMA Negeri 6 Sigi. This type of research was descriptive quantitative. In the learning process, the teacher used Google Drive and the Whatsapp application as online learning media. The data collected was the form of critical thinking ability test results that obtained through giving questions in the form of online essays. Furthermore, the data were collected and analyzed based on indicators of critical thinking skills which including interpretation, analysis, inference, and evaluation. The results of data analysis on critical thinking skills of students of class X MIA 1 on the indicators of interpretation, analysis, inference, and evaluation were 51%, 41%, 42%, and 47%, respectively. The average result for all indicators of critical thinking ability of students in class X MIA 1 was 45%. For class X MIA 2, 51%, 39%, 36% and 41% respectively. Overall, the results of the critical thinking skills of class X student was 43.5%. This result shows that the critical thinking ability of students in the class X SMA Negeri 6 Sigi was in a low category

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Supriyatman

Contact Email spymfis.untad@gmail.com

Phone +6281220589841

Journal Mail Official jurnalmediaeksakta@gmail.com

Editorial Address Jl. Soekarno Hatta km.9, Mantikulore

Location Kota palu, Sulawesi tengah INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Supriyatman

Contact Email
spymfis.untad@gmail.com

Phone
+6281220589841

Journal Mail Official
jurnalmediaeksakta@gmail.com

Editorial Address
Jl. Soekarno Hatta km.9, Mantikulore

Location
Kota palu,

Sulawesi tengah

INDONESIA