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Dwi Kartika Risfianty
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Evolusi: Journal of Mathematics and Natural Sciences
Published by Universitas Nahdlatul Wathan Mataram
ISSN : 26146193     EISSN : 28071654     DOI : -
Core Subject : Science, Education, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Education Mathematics
Evolusi: Journal of Mathematics and Sciences merupakan jurnal Matematika dan Ilmu Pengetahuan Alam yang dikelola oleh Fakultas MIPA Universitas Nahdlatul Wathan Mataram yang memuat artikel-artikel ilmiah baik berupa hasil penelitian, review artikel maupun kajian pustaka. Fokus dan scope dari Evolusi: Journal of Mathematics and Sciences antara lain: Ilmu Matematika dan Pendidikan Matematika. Matematika Terapan Ilmu Kimia dan Pendidikan Kimia Kimia Terapan Ilmu Biologi dan Pendidikan Biologi Biologi Terapan
Arjuna Subject : Umum - Umum
Articles 8 Documents
 1 
Search results for , issue "Vol 5 No 2 (2021): Oktober 2021" : 8 Documents clear
Inventarisasi Tanaman Hias yang Berkhasiat Sebagai Obat Tradisional di Desa Anjani Kecamatan Suralaga Hernawati Hernawati; Helmi Hariyanti; Khaerul Ihwan; Baiq Naili Dewi Atika; Pahmi Husain; Irna Il Sanuriza
EVOLUSI: JOURNAL OF MATHEMATICS AND SCIENCES Vol 5 No 2 (2021): Oktober 2021
Publisher : Fakultas MIPA Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/evolusi.v5i2.736

Abstract

The potential of ornamental plants can be used as Traditional medicine and does not cause side effects. It is important to take an inventory of the types of ornamental plants used as medicine by the Anjani Village community. This research method is qualitative or often referred to as Naturalistic research. Collecting data using observation and interview techniques while determining the Snow Ball Sampling technique. Data analysis was carried out interactively through the process of reducing data, display data, and verification data. The results showed that there were 14 types of ornamental plants from 12 families which were used as Traditional medicine bye pople of Anjani Village. Ornamental plants identified with herbal habits were 45% and those with shrubs and shrubs habits were 55%.
Pertumbuhan Pin Head Jamur Kuping Hitam (Auricularia Polytricha) Pada Media Tambahan Tetes Tebu Dengan Dosis Berbeda Mahrus Ali; Hefdiyah Hefdiyah
EVOLUSI: JOURNAL OF MATHEMATICS AND SCIENCES Vol 5 No 2 (2021): Oktober 2021
Publisher : Fakultas MIPA Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/evolusi.v5i2.773

Abstract

Mushroom growing media is the main source of mushroom production, so it needs attention, for example by changing the composition of the growing media such as adding supporting nutrients. Sugarcane drops are waste from the process of making sugarcane crystallization into sugar which is thought to have an effect on fungal growth. The purpose of this study was to determine the effect of molasses and the best dose on the growth of pin head A. polytricha. This research was carried out with the addition of molasses with different doses, namely, P0 (control), P1 (20 ml/liter), P2 (40 ml/liter), P3 (60 ml/liter) and P4 (80 ml/liter). This study uses One Way Anova analysis and 5% BNJ. Based on the results of the study, it was known that the addition of nutrients to the growing media of A. polytricha in the form of molasses had a fairly effective effect on the growth of the pin head of A. polytricha, namely at an additional dose of 80 ml/liter.
Tingkat Kemampuan Berpikir Kritis Matematika Siswa Sekolah Menengah Kejuruan Baidowi Baidowi; Ketut Sarjana; Ratih Ayu Apsari; Dwi Novitasari; Ni Made Intan Kertiyani
EVOLUSI: JOURNAL OF MATHEMATICS AND SCIENCES Vol 5 No 2 (2021): Oktober 2021
Publisher : Fakultas MIPA Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/evolusi.v5i2.791

Abstract

Vocational school students (SMK) are equipped with certain work skills so that later they can enter the labor market immediately after graduating from school. The ability to think critically is one of the skills needed in business and industry. Hence, it needs to be owned by SMK students. This study aimed to determine the level of mathematical critical thinking skills of SMK students. The research was conducted in one of the Vocational Schools in Mataram City. The research sample was 60 students in eleventh grade who were taken using a random sampling technique. The level of mathematical critical thinking skill is obtained through a mathematical critical thinking ability test. Furthermore, interviews were conducted to explore things that were not visible in the students' answers. The results of data processing addressed that the percentage level of mathematical critical thinking skills, namely 0% of students are in the very high level, 15% are in the high level, 25% are in enough level, 42% are in the low level and 18% are in the very low level. This means that more than half of the students have low mathematical critical thinking skills.
The Model of Coals Production in Indonesia Dara Puspita Anggraeni; Dwi Noorma Putri
EVOLUSI: JOURNAL OF MATHEMATICS AND SCIENCES Vol 5 No 2 (2021): Oktober 2021
Publisher : Fakultas MIPA Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/evolusi.v5i2.793

Abstract

The purpose of this research is to model the production of coals in Indonesia. The model used in this research is multiple linear regression. The independent variables in this model are the time(w) and the export (eb), while the dependent variable is the production of coals in Indonesia. The data used is the national export and production in 2012 until 2019. The best model obtained is prodi = -4,475* 1010+ 2,216*107 *wI + 1,649 * bei + This model has a MAPE of 5,27%. In this model time and export have explained 71,72 % of the independent variable that took effect from the production of coals in Indonesia.
Proses Berpikir Mahasiswa Berdasarkan Taksonomi SOLO dalam Penyelesaian Masalah Persamaan Diferensial Arjudin Arjudin; Sripatmi Sripatmi; Muhammad Turmuzi; Dwi Novitasari; Ratih Ayu Apsari
EVOLUSI: JOURNAL OF MATHEMATICS AND SCIENCES Vol 5 No 2 (2021): Oktober 2021
Publisher : Fakultas MIPA Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/evolusi.v5i2.795

Abstract

This research is an exploratory descriptive with a descriptive quantitative approach or mix-method which aims to analyze the thinking processes of pre-service mathematics students based on the SOLO taxonomy in solving differential equation problems. The subjects were 86 pre-service mathematics students of the fifth semester of the mathematics education study program who were selected using the purposive sampling technique. Meanwhile, data were collected using problem-solving tests and interviews and then analyzed using descriptive and qualitative statistics with the following stages: (1) transcribing test and interview data, (2) coding segmentation, (3) analyzing student thinking processes in solving differential equation problems, and (4) drawing conclusions. The results showed that pre-service mathematics students' thinking levels were at the pre-structural level (6.98%), uni-structural (25.58%), multi-structural (60.47%), and extended abstract (6.98). Meanwhile, there is no one at the relational level in solving the problem. These results indicate that students need to be well supported and facilitated in problem-solving to achieve higher levels of thinking, such as the relational and extended abstract levels.
Efektivitas Inisiasi Kultur Jaringan terhadap Pertumbuhan Mahkota Dewa (Phaleria macrocarpa) dengan Menambahkan Dosis Tiamin dan Asam Nikotinat pada Media Agar Muhammad Zaenudin; Dian Nitami; Pahmi Husain; Khaerul Ihwan
EVOLUSI: JOURNAL OF MATHEMATICS AND SCIENCES Vol 5 No 2 (2021): Oktober 2021
Publisher : Fakultas MIPA Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/evolusi.v5i2.797

Abstract

The crown of the gods (Phaleria macrocarpa) is a medicinal plant that is well known to the public. Tissue culture is a plant propagation technique by isolating plant parts such as shoots, leaves, and buds, and growing these parts in aseptic artificial media that is rich in nutrients. Initiation is the taking and naming of sterile explants into the growing media. Tinamine and nicotinic acid (vitamins) are one of the elements needed by plants as antioxidants and launch metabolism in plants so that plants will quickly absorb the nutrients contained in the media. This study was conducted to determine the effectiveness of tissue culture initiation on the addition of thiamine and nicotinic acid (vitamins) doses. The research method used is the experimental method which was tested with ANSIRA (analysis of variance) at the level of 1% and 5%. The results of this study indicated that the addition of thiamine and nicotinic acid doses had an effect on the initiation of tissue culture, because at stem height F>F table 3.11 the results were significantly different. In the number of leaves parameter obtained F count 2.87 < from F table 3.11 then the result is significant. After further testing with BNJ (Honest Significant Difference) at the 5% test level, the results were significantly different.
Pengaruh Gender Terhadap Level Berpikir Geometri Mahasiswa Dwi Novitasari; Nourma Pramestie Wulandari; Nilza Humaira Salsabila
EVOLUSI: JOURNAL OF MATHEMATICS AND SCIENCES Vol 5 No 2 (2021): Oktober 2021
Publisher : Fakultas MIPA Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/evolusi.v5i2.799

Abstract

The purpose of this study was to identify the geometric thinking level of students and determine the effect of gender on the geometric thinking level of pre-service mathematics students. This study is quantitative where data analysis using Mann Witney test. The sample of this research is 55 pre-service mathematics students prospective students consisting of 33 women and 22 men. The instrument in this study is the Van Hiele Geometry Test which consists of 25 multiple-choice questions. The data were analyzed using the Mann-Whitney U test. The results showed that male students were 36.36% at the visualization level, 40.91% at the analytical level, 9.09% at the informal deduction level, 9.09% at the rigor level. and the remaining 4.55% are in the pre-recognition category. Meanwhile, for female students, as many as 27.27% at the visualization level, 33.33% at the analytical level, 18.18% at the informal deduction level, 3.03% at the deduction level, 3.03% at the rigor level, and the remaining 15 .15% are in the pre-recognition category. In addition to the categories above, based on data analysis, it was found that there was no gender effect on the students' geometric thinking level.
Kendala Guru pada Pembelajaran Matematika di Era Pandemi Covid-19 Nilza Humaira Salsabila; Nourma Pramestie Wulandari; Ulfa Lu’luilmaknun; Dwi Novitasari
EVOLUSI: JOURNAL OF MATHEMATICS AND SCIENCES Vol 5 No 2 (2021): Oktober 2021
Publisher : Fakultas MIPA Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/evolusi.v5i2.801

Abstract

The aim of this study is to describe how the conditions of learning carried out online during the pandemic. Then what are the challenges faced and the advantages felt by teachers through online learning, as well as solutions from teachers related to increasing the effectiveness of learning mathematics during the pandemic. This research is quantitative-qualitative research. The subjects in this study amounted to 11 teachers of mathematics. The data collection instrument used a questionnaire regarding teacher responses about learning mathematics in the pandemic era. The results show that the applications used by teachers to assist the learning process include WhatsApp, Google Classroom, and others. However, there are several obstacles faced by teachers during the online learning process, for example limited facilities and the delivery of learning materials that are not optimal. The government needs to provide the needs of schools and students for online learning. Teachers also state that learning videos can help students learn during the pandemic.

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