bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improvement of Students’ Activities and Learning Outcomes in Mathematics through Comics-Based on Student Worksheets of Seventh Grade Islamic Junior High School in Padang
Authors: Azizi Nur , Fauzan Ahmad 
Published: May 2020

Abstract
Students need critical, systematic, logical, innovative thinking skills and effective collaboration in the learning process. Students want math learning that is fun, relaxed, easy to understand and the material displayed in a colorful book so it is fun to read and it can be presented in comic form. The classroom action research conducted aims to see the use of comic worksheets. Mathematics learning using comic worksheets can improve learning activities, understanding concepts and can improve students’ mathematical problem solving. Students feel happy if the mathematics material can be presented in comic form because it is easier to understand, presented in the form of pictures and series of stories that can lead in the discovery of concepts so that it is clearer and easier to understand, adds enthusiasm in learning and does not create a tense atmosphere of learning.
The effect of problem-based learning model on students’ geometry achievement by controlling mathematics initial ability
Authors: Jamaan E Z , Musnir D N , Syahrial Z 
Published: May 2020

Abstract
This study aimed to know the difference of geometry learning outcome between students studying with problem-based learning model and students studying with scientific learning approach after controlling mathematics initial ability. The design of this study was non-equivalent control group design. Random sampling technique was used to take the research sample which amounted to 18 students. Technique of collecting data was the tests mathematics initial ability and geometry learning outcome. Data was analysed by using analysis of covariate. The results showed that geometry learning outcomes between students studying with problem-based learning model were higher than that studying with scientific learning approach after controlling mathematics initial ability.
The development of device learning based on contextual teaching and learning improve mathematical communication skills class VII
Authors: Afriani E , Asmar A 
Published: May 2020

Abstract
This study aims to develop mathematical learning devices The aim is for students to be able to communicate ideas with symbols, tables, diagrams, or other media to clarify the state of a mathematical learning problem called mathematical communication skills. it is necessary to develop a device with an approach to improve the student’s mathematical communication skill. The CTL approach can help students to create mathematical communication skills. Because with CTL, students can find the subject learned by linking it to real-life situations so that they can apply it in everyday life. The indicators of communication capabilities developed are Illustrating mathematical ideas, using symbols/notations and mathematical operations, selecting and writing relevant mathematical strategies and giving conclusions at the end of the answer. The development model used is the Plomp model, which consists of three phases. First is the initial investigation phase, the second is the development or prototype development phase, and the third is the evaluation phase.
Preliminary analysis on development of mathematics learning tools based on indicators of mathematical communication skills
Authors: Ramadhani S N , Irwan I 
Published: May 2020

Abstract
The research is aimed to describe data of preliminary analysis on development of mathematics learning tools based on indicators of mathematical communication skills. Mathematical communication skills of senior high school students are still low. Therefore, the research intends to develop learning tools with RME approach by concentrating on redesigning students’ worksheet. This research is a qualitative research because the main data signifies the result of tests of mathematical communication skills. The result of research indicate that the students’ mathematical communication skills based on indicators were still weak and the mathematics learning tools that will be developed contains teaching-learning approach that will help students improving their mathematical communication skills.
Student worksheet usage effectiveness based on realistics mathematics educations toward mathematical communication ability of junior high school student
Authors: Ismail R N , Arnawa I M , Yerizon Y 
Published: May 2020

Abstract
The purpose of this research is to examine the effectiveness of student worksheet (LKPD) based on realistic mathematics educations (RME) of class VIII of Junior High School. This is a development research with Plomp Model. The research design employs quasi experiments with Only-Posttest Control Group Design. This research took place in Public Junior High School (SMPN) Padang of class VIII. The sample is determined by purposive sampling. The treatment toward experiment group is learning by using LKPD based on RME. Meanwhile, control group is using student book according to curriculum 2013. The research instruments are test items, learning observation sheet, and learning device which had been tested for validity and practicality in the development research stage. Data analysis is conducted through t test for the mean difference test and the Scheffe test for the effectiveness of the LKPD test. The research result showed that students’ mathematical communication ability of class VIII of Junior High School (SMP) by using LKPD based on RME is better than student who uses student book. Finally, it can be concluded that LKPD based on RME is effective in improving students’ mathematical communication ability.
Forecasting of Rainfall in Sumatera Barat: Singular Spectrum Analysis (SSA) Application
Authors: Fitri F , Rahmat R , Pengestuti A D 
Published: May 2020

Abstract
West Sumatra has 2 peak of rainy seasons, October-November and March to May. The high intensity of rainfall causes West Sumatra has potential to floods. Precise forecasting is needed to be a reference for the government. One of the method can be used is SSA. This method is flexible because it does not require specific form of time series data, as well as parametric assumptions. Thus, accurate forecasting results is expected to be provided from the SSA method. From the forecasting process that has been done, obtained MAPE of 17% with the tracking signal value within the tolerance range.
Professionalism of teacher in geogebra software
Authors: Subhan M , Nasution M L , Armiati A , Aziz S A , Rani M M , Rifandi R , Harisman Y 
Published: May 2020

Abstract
Research on teacher professionalism in the learning process experiences exponential growth. One form of teacher professionalism is how teachers can use media that can make learning interesting. Geogebra is an application that can be used by teachers in learning on certain material. This research was a survey research that sees teacher interest in the use of geogebra software. Sixteen teachers from 10 junior high schools in one sub-district in one of city at Indonesia were chosen as research subjects. The training was held for five hours. When the teacher training was videotaped, observed, and interviewed. Obtained 84.76% percent of teachers gave good attention and 73. 18 % give good participation to this training.
Structural Equation Modelling: The Affecting of Learning Attitude on Learning Achievement of Students
Authors: Salma A , Fitria D , Syafriandi S 
Published: May 2020

Abstract
Student can obtain the high learning achievement because some factors. Those factors can appear from themselves or out of themselves. One of them is learning attitude of student. Learning attitude could be observed by some indicators. There were four indicators of learning attitudes, which were honesty, responsibility, discipline, and tolerance. The good learning attitude will give effect to learning achievement. Learning achievement is result of the learning process. There are several indicators to find out about students learning achievement. They are GPA, understanding of the concept, application and analysis. Learning achievement and learning attitude are unobserved variable, called latent variables. The method was used to analysis the latent variable in this research that was Structural Equation Modelling (SEM). It is combination from factor analysis, path analysis and regression. The aim of this research was to known affecting indicators from learning attitudes to learning achievement. The result showed that indicators of learning attitude had t-value more than 1.96 and that mean all of indicators in learning attitudes gave effect to the learning achievements.
An Analysis of student’s improvement learning outcome and student’s errors based on new man using M-APOS learning approach
Authors: Septianingsih R , Irwan I 
Published: May 2020

Abstract
The low learning outcomes of students in solving story questions was indicate the occurrence of problems in students. That problem is caused one of them by the mistakes of students in working on story problems. This study will see an increase in student learning outcomes and the types and causes of student errors. This type of research is a mixed method with the research design is sequential mixed method. The results of this study indicate that the probability value is 0,000 so that How is rejected or in other words there is a significant increase after learning is given using the M-APOS approach. The results of the error analysis based on the Newman procedure consist of understanding errors, transformation errors, process errors and writing error answers. Then found another error in this study is an error in writing the unit.
The Development of learning devices with realistic mathematics education based in the pharmaceutical program to improve mathematic problem-solving
Authors: Syelfia S , Armiati A 
Published: May 2020

Abstract
This study aims of this research to describe the value of learning devices based on the realistic mathematics education that are developed, the improved student ability to solve problem mathematically which is taught through learning devices based on realistic mathematics education developed, and the student’s response to a learning device based on realistic mathematics education developed on a pharmaceutical program for 10th grade vocational high school students. Developed learning tools consisting of the learning implement plan and the student’s worksheet. This study uses development research with the model used is Plomp (Preliminary Research, Prototyping Phase, dan Assessment Phase). The research only did until the preliminary research covered the student’s analysis. Based on a student’s observation that a student’s mathematical problem solving ability is low because the learning tools have not supported the students in improving the problem-solving ability, the learning tools that teachers use are not in accordance with the student’s skill program, only a few teachers present problems reading for practicing the mathematical skills of students. The instrument used in this research is the validity test sheet, practical test sheet, and problem solving ability test.
Analysis of students Initial mathematical communication skills in mathematics learning
Authors: Putri N D , Musdi E 
Published: May 2020

Abstract
This research is motivated by the low ability of students to communicate mathematical ideas, compile mathematical evidence using complete sentences, symbols, tables, and diagrams, to clarify the existing problems. This study aims to find out how the initial mathematical communication skills of students in learning mathematics, namely by giving mathematical problems related to the daily lives of students of grade VIII SMP. Problems are constructed based on indicators of communication ability and then assessed using the scoring rubric mathematical communication skills. The instrument used in the form of a preliminary test with 2 item and a sample of as many as 21 students. The results of the scoring rubric of students’ mathematical communication skills obtained in indicator 1 were 23.81%, indicator 2 was 28.57%, indicator 3 was 38.11% and indicator 4 was 14.28%. If seen from the overall results of the initial test students only get 14.28% who is able to explain with the idea of dramatic communication. The results of this initial test study was 42.85%. It indicate the need for follow-up to improve students’ communication skills.
Analysis of Student Errors in Solving Ordinary Differential Equations Based on SOLO Taxonomy
Authors: Yarman Y , Fauzan A , Armiati A , Lufri L 
Published: May 2020

Abstract
This study aims to describe the errors of student in solving ordinary differential equation (ODE) problems based on SOLO taxonomy. In this case there are 5 kinds of errors, namely concept errors, using data, language interpretation, technical, and making conclusions. This descriptive study involved 10 ODE research subjects. The research results obtained are the subjects of research tends to make mistakes in the five SOLO taxonomy errors. The reason is because students are not skilled in using formulas, are not thorough, and the habit of not repeating lessons.
Development of Problem-Based Mathematic Learning Model to Improve Creative Thinking Ability of Elementary Teacher Education Students, Bung Hatta University
Authors: Amrina Z , Zuzano F , Wahyuni Y 
Published: May 2020

Abstract
A problem-based mathematic learning model with high validity, practicality, and effectiveness is produced to improve students’ competence. The stages on developing it consist of 1) preliminary stage, 2) proto-type stage including planning, evaluation, and revision, 3) product assessment stage. The mathematic learning model based on problem was tested to the college students of PGSD Department of FKIP, Bung Hatta University involving 30 students and 3 mathematic lecturers. The instrument used in this study consisted of 1) instrument of validity appraisal, component of learning model and toolkit, 2) instrument of practicality appraisal from students and lecturers, 3) effectiveness instrument covering test result and students’ appreciation appraisal toward problem-based mathematic learning model. The result showed that problem-based mathematic learning model including syntax/learning steps, along with learning tools in term of semester learning plan and students’ worksheet was considered valid, practical, and effective.
Design learning development of a set topic based on the problem based learning on grade VII Junior High School
Authors: Kawarti Y , Armiati  
Published: May 2020

Abstract
This research based on reality because it is found in the research fields that a study of the learning has already been worked optimally, but the results of learning are still gained some lower minimum achievement criteria In student’s activities they do not want to ask and express their ideas or opinions, even though they often get some difficulties to solve their problems are about the expressing of learning. Teachers have low competencies in using their skill usages for learning methods, and the textbooks of the study which are not used to facilitate in the concept meanings from the materials are being learned. When they described it to their students, they will also feel the poor relation for the reality and also daily student lives. The products are gained from this research, such as, the HLT, the teachers’ books and the students’ books. That each of them They use the Plomp developed model which consists of the initial investigation phases, the prototype making and pointing phase, both of them make a discussion of the study development in this research. This is as an introduction phase. The purpose of this research wants to produce the design learning development as a set topic base on the problem based learning on the 7th at SMPN l VII Koto Sungai Sarik is validly, practically, and associatively. The data is obtained this initial stage and used to design the HLT, the teachers’ and student’s worksheet
Development of mathematical learning devices based on realistic mathematics education (RME) in senior vocational school
Authors: Andison A , Armiati A 
Published: May 2020

Abstract
This study is development of mathematical learning devices based on Realistic Mathematics Education (RME) in the chemical engineering expertise program in students in class XI senior vocational schools that supports valid, practical and effective problem-solving skills. This research is development research. The method used in the research is the method of developing Plomp with stages: (1) preliminary research (initial research), (2) prototyping phase (development stage), and (3) assessment phase (assessment phase). The product is a learning device. Learning tools developed include: (1) Lesson plan and (2) Student Worksheets. (1) analyzing the needs, (2) the draft development process, (3) drafting the development, (4) expert reviews and trials carried out in several stages namely (a) expert review and learning media experts, (b) analysis and revision I, (c) expert review of learning design, (d) analysis and revision II, (e) individual trials and small group trials, (f) analysis and revision III, (g) field trials: class and teacher, (h) analysis and revision IV, and (i) end product development results.
The Validity Of Learning Devices Of Cooperative Models Based On Blended Learning To Improve Learning Outcomes
Authors: Husaini A , Syarifuddin H 
Published: May 2020

Abstract
This study aims to produce cooperative learning tools based on blended learning that meets the validity criteria. The development research used Plomp model which consists of three phases namely the initial preliminary phase, the prototyping phase, and the assessment phase. The subjects of this study were 10th-grade Islamic senior high school student of KMM Kauman Padangpanjang. The validation sheet conducted by three mathematical education experts, one educational technologiest expert and one Indonesian language expert. Based on these results we conclud that instruments of the cooperative mathematics learning model based on blended learning is valid.
Implementation of the 21st Century Skills to High Order Thinking Students’ Mathematical in Senior High School Padang
Authors: Asmar A , Arnellis A , Sriningsih R 
Published: May 2020

Abstract
The purpose of this study was to describe the process and results of the development of 21st century learning tools based math problem based learning to improve high-order mathematical thinking students’ in senior high school Padang city and describe the quality of math learning tools of the 21st century based on problem based learning to improve the aspect of validity, practicality. The methods of study is a research development that is used to develop a software product math learning 21st century form of RPP and LKPD integrating 4 C which was adapted from the model Plomp. (Plomp and Nieveen, 2013: 30). Subjects tested in this study were class X SMA Padang. The data collection instrument were the sheet analysis, field notes, interview, questionnaire, and test results of learning. Data were analyzed using descriptive analysis that describes the validity and practicality of learning tools are developed. This research data analysis technique used is based on a questionnaire filled by experts then analyzed for the validity of the resulting product. Analysis of the validity of using a Likert scale. The results of the validation of the validator indicates that the device is a valid PBL based learning and practical with some characteristics such as learning devices produced have been adapted to the characteristics of Problem Based Learning (PBL). RPP and LKPD designed as a guideline for teachers in implementing the learning process is valid and practical.
Factors Affecting Academic Achievement Students’of Mathematics Department by Using Probit Regression Analysis
Authors: Amalita N , Arnellis A , Fitria D 
Published: May 2020

Abstract
One of the students’ academic achievement can be seen GPA, the higher the index value, the better student achievement success rate of students who obtained. Many factors affect student achievement index both internal factors and external factors. This paper described at factors that affect student achievement index of Department of Mathematics UNP who enrolled 2016 by using probit regression analysis. The results of this study are students SBMPTN, does not work while in college, and was not active in organizations on campus have the opportunity to get a better grade.
What students know about climate change? a case study of high school students in Samboja, Indonesia
Authors: Nugroho A W 
Published: May 2020

Abstract
Indonesia is among the top 10 highest countries in the world producing huge amount of greenhouse gases (GHG) to the atmosphere. However, climate change including its impacts might not be understandable by public in Indonesia. This is because climate change is not a crucial issue in this developing country. Education can play important roles in supporting national policies in reducing GHG in Indonesia by communicating climate change and in raising environmental awareness among people including students in schools. This study aims to determine high school students’ perceptions about climate change, to provide insights for curriculum planning to combat climate change. Furthermore, this study can also provide some strategies to the government changes by improving formal education in combating climate change. This study is conducted in the 6 selected high schools in Samboja district, Kutai Kartanegara regency, East Kalimantan province, Indonesia. Data collection was conducted from February to March 2017. Primary data is collected by using questionnaires, which are distributed to the 1st, 2nd and 3rd grade students in each selected high schools. In total there are 360 students participating in this study. Results shows that majority of students in this study have heard about climate change, however their answer are inconsistent. This indicates that these students do not fully understand about climate change. Furthermore, students also do not know about the main causes of climate change. In conclusion, climate change issues need to be elaborated in science curriculum. It is suggested that the government should introduce policies in education sectors to inform about climate change.
Budget restructuring toward utilization of carbon-based environmental services in National Parks
Authors: Nurfatriani F , Iqbal  
Published: May 2020

Abstract
Role of National Parks (NPs) as carbon storage has still not been well appreciated in REDD+ concept. This is because the methodology for providing incentives for reducing emissions from land sector still uses an additional approach. However, REDD+ activities have also enhanced carbon stocks and implemented sustainable forest management. Technical efforts to improve carbon stocks in NPs can be carried out in the form of utilizing carbon-based environmental services that consist of three schemes, namely: a) emission reduction scheme, b) forest carbon stock conservation scheme, and c) forest carbon stocks enhancement scheme. This study aims to analyze the budget restructure of NPs to support utilization of carbon-based environmental services in NPs. This study uses qualitative and quantitative approach with content and fiscal analysis. The results indicate that the proportion of budget related to the utilization of forest carbon services is still very small compared to the total NP’s budget (15%) in four National Parks. For this reason, restructuring budget is needed and should be based on the use of carbon-based environmental services. This will further illustrate how resource allocation must be optimized and used as a basis for providing incentives for NPs.