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Dewanta Arya Nugraha
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International Journal of Science and Applied Science: Conference Series
ISSN : 25494627     EISSN : 25494635     DOI : -
Core Subject : Science, Education,
International Journal of Science and Applied Science: Conference Series is a scientific proceedings publication service for international conferences. Subject areas of this publication include: physics, biology, mathematics, chemistry, education, materials science, environmental science, bioscience, engineering and applied science. International Journal of Science and Applied Science: Conference Series is published by Universitas Sebelas Maret, Indonesia.
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Articles 10 Documents
Search results for , issue "Vol 2, No 1 (2018): International Conference on Science and Applied Science 2017" : 10 Documents clear
Organizer of International Conference on Science and Applied Science 2017 - -
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Conference on Science and Applied Science 2017
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (461.362 KB)

Abstract

Organizer of International Conference on Science and Applied Science 2017
Amusement Park Physics in Panggon Lunjak (Trampoline): Analysis of Kinematics and Energy Use Video Tracking Akhmad Yusuf; Ishafit Ishafit; Toni Kus Indratno
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Conference on Science and Applied Science 2017
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (955.414 KB) | DOI: 10.20961/ijsascs.v2i1.16672

Abstract

Panggon Lunjak (trampoline) is one of the famous amusement parks among the people that we can use as a recreation to enjoy a pleasant sensation. Without us knowing the amusement park that we often encounter is actually the result of the application of science and technology, especially in the field of physics, because it is amusement park for student of science is a real laboratory or the giant laboratory that we can use as a study of physics concepts and as research materials. Panggon Lunjak (trampoline) motion is very close to the harmonic  motion where the resulting graph of the sinus so that on the graph will be in the analysis of  kinematics and energy phenomena, so that research on simple harmonic motion materials is not limited to research using pendulum motion and spring load motion which is often exemplified as research on harmonic motion. The purpose of this study is to analyze the physical aspects of Panggon Lunjak (trampoline) motion based on the laws of physics on the concept of kinematics and analyze energy, Where the mechanical energy of addition between potential energy and kinetic energy (Conservation of energy). The analysis is done by using video tracking. Based on the analysis done using people as a mass, the result of the amplitude, the spring constant, angular frequency, and the law of conservation of energy on the Panggon Lunjak (trampoline) is true. This analysis activity will be well used as a physics learning for students.
Analysis Science Process Skills Content in Chemistry Textbooks Grade XI at Solubility and Solubility Product Concept Bayu Antrakusuma; Mohammad Masykuri; Maria Ulfa
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Conference on Science and Applied Science 2017
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (619.485 KB) | DOI: 10.20961/ijsascs.v2i1.16682

Abstract

The aim of this research was to determine the analysis of science process skills in textbooks of chemistry grade XI in SMA N 1 Teras, Boyolali. This research used the descriptive method. The instruments were developed based on 10 indicators of science process skills (observing, classifying, finding a conclusion, predicting, raising the question, hypothesizing, planning an experiment, manipulating materials, and equipment, Applying, and communicating). We analyzed 3 different chemistry textbooks that often used by teachers in teaching. The material analyzed in the book was solubility and solubility product concept in terms of concept explanation and student activity. The results of this research showed different science process skill criteria in 3 different chemistry textbooks. Book A appeared 50% of all aspects of science process skills, in Book B appeared 80% of all aspects of science process skills, and in Book C there was 40% of all aspects of the science process skills. The most common indicator in all books was observing (33.3%), followed by prediction (19.05%), classifying (11.90%), Applying (11.90% ), planning experiments (9.52%), manipulating materials and equipment (7.14%), finding conclusion (4.76%), communicating (2.38%). Asking the question and hypothesizing did not appear in textbooks.
Epistemological Obstacles Experienced by Indonesian Students in Answering Mathematics PISA Test on the Content Uncertainty and Data H Rahman; D Suryadi; R Rosjanuardi
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Conference on Science and Applied Science 2017
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (943.496 KB) | DOI: 10.20961/ijsascs.v2i1.16694

Abstract

The purpose of this research is trying to identify epistemological obstacles which were experienced by Indonesian students in answering PISA test for mathematics literacy content uncertainty and data. Epistemological obstacles was identified by giving a test to the respondent, students of grade 7th and 8th who have studied data representation in the class. Respondents’ work analysed by qualitative method. The result showed that respondents have epistemological obstacles in reading the data, reading between the data, and reading beyond the data. To gain further understanding, some respondents chose to be interviewed.
Anti-hypercholesterolemia effects and quality of eel (Anguilla bicolor) oil Heru Sasongko; Sugiyarto Sugiyarto; Agung Budiharjo; Nur Rohman Efendi
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Conference on Science and Applied Science 2017
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (725.651 KB) | DOI: 10.20961/ijsascs.v2i1.16704

Abstract

Eel (Anguilla bicolor) is a general fish consumption in many countries. Besides its vitamin rich, eel oil is also known to contain fatty acids like oleic acid and palmitic acid.  That is necessary for traditional medicine and as food a supplement. It is known that polyunsaturated fatty acids are recognized to lower blood cholesterol. In this study, fresh eels were extracted using reflux methods. The study was conducted on rat test animals given high-fat diet and PTU (Propylthiouracil). Treatment was given eel fish oil with dose 0.5 ml / kg BW; 1 ml / KgBW and 2 ml / KgBW. The results of eel extraction showed that the metal content is undetectable except Zn metal 11.72 ppm. Eel fish oil affects the total cholesterol decrease at each dose (h <0.05). Known percent increase in total cholesterol after 14 days at a dose of 0.5 ml / kg body weight (-14.10%); 1 ml / kg BW (2.12%) and 2 ml / kg BW (11.37%).
Students’ Conceptual Change On Human Reproduction Concept Using Scientific Approach Lathifatuzzahra Taufiq; S Sriyati; D Priyandonko
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Conference on Science and Applied Science 2017
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (971.223 KB) | DOI: 10.20961/ijsascs.v2i1.16714

Abstract

This study aim was to describe students’ conceptual change and investigate the patterns of students’ conceptual change in human reproduction system concept through application scientific approach. The research method was weak experimental with one group pretest-post-test design and the number subject of this study were 34 students, 11th -grade students of SMAN 1 Indramayu. The instrument was three tier test which given at pretest and post-test. Data analyzed used qualitative and quantitative analysis. Qualitative analysis obtained through analyzed student answer then classified into category suitable. Quantitative analysis obtained through calculation N-gain value and one sample t test. The results showed mostly students had a misconception and lack of knowledge on all of the human reproduction concept. After a lesson, a conceptual change occurred, a percentage of students who have scientific concept increased from 27,74% to 79,23% and the average value of N-gain included into category medium (0,69). According to one sample t test, showed that there was a significant difference between post-test and minimum completeness criteria (KKM) value, 75 (amp. Sign 2 tailed = 0,048). Therefore, a scientific approach supported to build the concept. Furthermore, the analysis also showed students’ conceptual change patterns: changed to be positive, changed to be negative, still positive, and still negative. Pattern 4 (lack knowledge to be understanding a concept or changed to be positive) is the most which got 31,69%.
The development of student worksheet assisted by interactive multimedia of photoelectric effect to build science process skills Payudi Payudi; Chandra Ertikanto; Noor Fadiawati; Agus Suyatna
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Conference on Science and Applied Science 2017
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (937.975 KB) | DOI: 10.20961/ijsascs.v2i1.16726

Abstract

This research aims to produce student worksheet based on interactive multimedia on photoelectric effect to grow science process skills that are attractive, easy, useful, and study to improve students learning out comes. The development design used in this research by Sugiono which implemented in 8 stages, they are potential and problem, data collecting, product design, validation design, revision design, product trial, product, and trial usage. Trial usage of the product was conducted at SMA Negeri 2 Bandar Lampung in October 2016 to November 2016 and the research subject was twelve grade classes. The sampling technique of product trial subjects done by purpose sampling, it took two same classes. One class used as an experimental class and the other class as a control class. Trial product design used Matching-Only Pretest-Post test Control Group Design method. Data collecting technique used questionnaire and test (pretest and post test). The data were analyzed by using a descriptive quantitative method. The conclusions of the research are: (1) Student worksheet to build scientific process skills on photoelectric effect should include predicting and hypothesizing activities, planning the experiment, doing the practicum, interpreting the observation, and communicating. (2) Student worksheet of development result has an attractiveness level with the average score is 3.27 or 81.74% with “interesting” category, ease level with the average score is 3.25 or 81.32 with “simple”, and usefulness level with the average score is 3.21 or 80.13% of “useful” category. (3) Student worksheet of development result is effective to improve students learning outcomes in science process skills with N-gain average is 0.63 with the medium.
The Analysis of Student’s difficulties Based on Skemp’s Understanding Theorem at The Grade VII in Quadrilateral Topic R H Kuncorowati; Mardiyana Mardiyana; D R S Saputro
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Conference on Science and Applied Science 2017
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (837.896 KB) | DOI: 10.20961/ijsascs.v2i1.16736

Abstract

In learning process must be found the student’s learning difficulties. The difficulties blocked students in learning process caused by several internal factors(talent, motive, intelligence, motivation) and external factors (family, teachers, peers). The student difficulty in learning general is caused by the lack of understanding of mathematical concepts. Skemp states that there are two types of mathematical concepts understanding, namely instrumental understanding and relational understanding. The purpose of research in this article is to describe the students' difficulties to solve the problem in a quadrilateral topic based on Skemp's Understanding theory. Skemp’s Understanding theory indicators include : students ability to classify objects based on requirements that can build this concept, students ability to apply this concept with algorithm , students ability to giving examples of a concept, students ability to present the concept in mathematics representation, students ability to relating various mathematical concepts, and the ability to develop the necessary terms and conditions is quite a concept. This research was designed in qualitative research. The data was collected by test and interview. The results show that the most difficult is about the students ability to relating various mathematical concepts.
Understanding students' concepts through guided inquiry learning and free modified inquiry on static fluid material Sularso Sularso; Widha Sunarno; Sarwanto Sarwanto
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Conference on Science and Applied Science 2017
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (665.564 KB) | DOI: 10.20961/ijsascs.v2i1.16746

Abstract

This study provides information on understanding students' concepts in guided inquiry learning groups and in free modified inquiry learning groups. Understanding of student concept is reviewed on the concept of static fluid case. The number of samples tested were 67 students. The sample is divided into 2 groups of students: the group is given guided inquiry learning and the group given the modified free inquiry learning. Understanding the concept of students is measured through 23 tests of items about the concept of static fluid. The result of the students 'understanding of the guide inquiry learning is better than the students' understanding of the concept of free modified inquiry learning.
Affective Aspect of Junior High School Students Viewed from Self Efficacy U H Putri; Mardiyana Mardiyana; D R S Saputro
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Conference on Science and Applied Science 2017
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (692.666 KB) | DOI: 10.20961/ijsascs.v2i1.16758

Abstract

The relevance of this research is the growth of character values for students in Indonesia. Mathematics is a subject that builds character value for students. This can be seen from how students view mathematics from their perspective. Students' perspective can be seen as a student's assessment of the mathematics such as from the attitudes, interests, self-concepts, values, and morals shown in the learning process of mathematics with the students' willingness to act positively or negatively. In mathematics learning, this is called the affective aspect (AA). One of the factors influencing students’ AA is self-efficacy (SE). SE is a belief that is someone has to complete a given task or problem. There are three categories of SE that owned by students, that is high, medium, and low. The purpose of this study is to determine which ones provide better mathematics AA than students. The research subjects are 294 students in Karanganyar Regency. Data is obtained by questionnaire. Based on the results of data analysis, the conclusion is students with high SE have better mathematics AA than students with moderate and low SE, while students with moderate SE have better mathematics AA than students with low SE.

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