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International Journal of Science and Applied Science: Conference Series

ijsascs
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Published by Universitas Sebelas Maret

ISSN : 25494627 EISSN : 25494635 DOI : -

Core Subject : Science, Education,

Chemistry Education Mathematics Physics

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 241 Documents

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Do Performance Assessment has Contribution to Achieve Students’ Commnunication Skills? Isnaeni, Aisah; Wulan, A Ratna; Solihat, R
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Journal of Science and Applied Science: Conference Series
Publisher : Universitas Sebelas Maret

Communication skill was an important component of education. This study aims to analyzed students' communication skills and response by using performance assessment on water cycle concept. The method that used in this study is descriptive. Subject consists of first-grade students’ in senior high school (n:32). The instruments that used in this study are the task, observation sheets, questionnaire, self and peer assessment. Those instruments analyzed four indicators of communication such as; (1) articulate thoughts and ideas effectively,(2) listen effectively, (3) use communication for a range of purposes and (4) Communicate Effectively in diverse environments. Sccorring of instruments has two categories, score from 1-4 for task and sheets of observation, score from 0 and 1 for self and peer assessment and questionnaire using descriptive analyzed. Then, indicators of communication skills categorized into three groups: high, medium and low. The data showed that all of the indicators in medium categorized 81.3% in the first indicator, 53.1% in the second indicator, 46.9% in the third indicator, and 68.8% in the fourth indicator. Therefore students’ have communication skill in medium category and most of the students’ has positive respond in performance assessment because its’ can help students’ to fix their performance in the instructional process.

Understanding students' concepts through guided inquiry learning and free modified inquiry on static fluid material Sularso, Sularso; Sunarno, Widha; Sarwanto, Sarwanto
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Journal of Science and Applied Science: Conference Series
Publisher : Universitas Sebelas Maret

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.

Vulnerability zoning of earthquake disaster of Palu Rusydi, H; Effendi, Rustan; Rahmawati, Rahmawati
International Journal of Science and Applied Science: Conference Series Vol 1, No 2 (2017): International Journal of Science and Applied Science: Conference Series
Publisher : Universitas Sebelas Maret

Palu is the area traversed by Palu-Koro faults and some small faults arround, which causes the frequent occurrence of earthquakes in Palu. Therefore, this study aims to determine the vulnerability of earthquake zone. Determination of this zona is one way to reduce the risk of earthquake disaster. This study used two methods, they are are descriptive and overlay weighted sum. For the overlay of data processing method using GIS application. The result of the study showed 45 district in Palu, 12 district located in low vulnerability zone, 11 district located in moderate vulnerability zone and 22 district located in high vulnerability zone.

Analysis Science Process Skills Content in Chemistry Textbooks Grade XI at Solubility and Solubility Product Concept Antrakusuma, Bayu; Masykuri, Mohammad; Ulfa, Maria
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Journal of Science and Applied Science: Conference Series
Publisher : Universitas Sebelas Maret

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.

The Analysis of Student’s difficulties Based on Skemp’s Understanding Theorem at The Grade VII in Quadrilateral Topic Kuncorowati, R H; Mardiyana, Mardiyana; Saputro, D R S
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Journal of Science and Applied Science: Conference Series
Publisher : Universitas Sebelas Maret

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.

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 Journal of Science and Applied Science: Conference Series
Publisher : Universitas Sebelas Maret

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Organizer of International Conference on Science and Applied Science 2017

The effect of application of contextual teaching and learning (CTL) model-based on lesson study with mind mapping media to assess student learning outcomes on chemistry on colloid systems Fadillah, Annisa; Dewi, Ni Putu Laksmi Cintya; Ridho, Dimas; Majid, Ahmad Nurkholis; Prastiwi, Meidiana Nur Budi
International Journal of Science and Applied Science: Conference Series Vol 1, No 2 (2017): International Journal of Science and Applied Science: Conference Series
Publisher : Universitas Sebelas Maret

The research was conducted to determine the effect of the application of CTL learning model based on lesson study with mind mapping media to the learning outcomes of students on colloid systems. The population of this research was all students of grade XI of SMA N 1 Sunggal. The sample was taken using on the purposive random sampling. The Experiment class was taught with Contextual Teaching and Learning (CTL) model based on Lesson Study with Mind Mapping media and the control class taught with conventional learning model. The data was collected using an objective test was consisting of 20 questions which validity, reliability, level of difficulty and power of difference had been tested. T test results showed that tcalculate = 2.1 and ttable = 1.6697 thus tcalculate> ttable which means that Ha is accepted and Ho is rejected. The enhancement of the student learning outcomes showed that the results of experiment class are g = 72.88%, while the control class is 68.97%. From the percentage, it can be seen that learning outcomes of the experiment class are greater than the control class. The analysis of developing cognitive aspects pointed out that C1 = 70.02%, C2 = 73.58%, C3 = 68.63%, Thus the domain of cognitive level are on the cognitive aspects of C2. The result of Lesson Study Analysis showed the results of 71.09% at the first lesson and 88.28% at the second lesson. It means that there is increasing adherence to the indicators after two lessons. Based on the above results, it can be concluded that the result of studying chemistry of the students of class XI of SMA Negeri I Sunggal TA 2014/2015 taught by a CTL model based on Lesson Study with Mind Mapping media was higher (72.88%) than those taught by conventional learning models (68.97%) in the subject matter of colloids System.

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

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.

Anti-hypercholesterolemia effects and quality of eel (Anguilla bicolor) oil Sasongko, Heru; Sugiyarto, Sugiyarto; Budiharjo, Agung; Efendi, Nur Rohman
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Journal of Science and Applied Science: Conference Series
Publisher : Universitas Sebelas Maret

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%).

The development of student worksheet assisted by interactive multimedia of photoelectric effect to build science process skills Payudi, Payudi; Ertikanto, Chandra; Fadiawati, Noor; Suyatna, Agus
International Journal of Science and Applied Science: Conference Series Vol 2, No 1 (2018): International Journal of Science and Applied Science: Conference Series
Publisher : Universitas Sebelas Maret

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.

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Contact Name
Dewanta Arya Nugraha

Contact Email
dewanta.an@gmail.com

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Journal Mail Official
ijsascs@mail.uns.ac.id

Editorial Address
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Location
Kota surakarta,

Jawa tengah

INDONESIA