GAMAPROIONUKLEUS

Identification of Students' Mistakes in Solving the Limit Function Problems for Class XI SMA Negeri 1 Palangka Raya

Agustin Dewanti Putri — 2021-11-01

This research is motivated by the fact that many students of class XI make mistakes in solving the Limit Function problem. The aims of this research are 1) to describe the mistakes made by the students of class XI MIPA 2 SMA Negeri 1 Palangka Raya in solving Function Limit questions; 2) describe the cause of students in class XI MIPA 2 SMA Negeri 1 Palangka Raya making mistakes in solving Function Limit questions.

The type of research used in this research is descriptive with a qualitative approach. This research was conducted in the even semester of the 2020/2021 academic year. The subjects of this study were 34 students of class XI MIPA 2 SMA Negeri 1 Palangka Raya, then 4 students were selected to be interviewed. Data collection techniques using tests and interviews. The process of taking test data online uses Google Classroom, while interviews are conducted online via WhatsApp. The test in this study was in the form of 5 items on Limit of Algebraic Functions which had previously been reviewed by three raters, namely two lecturers of the Mathematics Education Study Program at the University of Palangka Raya and one mathematics teacher at SMA Negeri 1 Palangka Raya with the result that all items could be used. Data analysis is used by reduction, data presentation, and concluding.

Based on the results of the study, the errors made by students in solving the Limit Function problems lie in the following aspects: (a) conceptual errors, including errors in understanding and applying the concept of limits consisting of definitions and theorems of limits; (b) procedural errors made by students include; errors in writing regular work steps, errors in manipulating algebraic forms, factoring and rationalizing root forms, algebraic operations and errors in calculations. The cause of errors in solving the problem of limit algebraic functions is that students do not understand and master the prerequisite material needed in learning the limit of algebraic functions. Thus causing students not to understand the concept of limits such as the use of theorems that limit algebraic functions. In addition, students are still not thorough in understanding the meaning of the problem and have not mastered the operations of numbers with different signs.

Implementation of Flipped Classroom Learning Model through the Line of Students Learning Outcomes in Biological Scope Materials of Class X SMA Negeri 4 Palangka Raya

Agitha Geby Sitopu — 2021-11-01

The results of observations in SMA Negeri 4 Palangka Raya that the value of Biology subjects for some students is still low, this is due to the lack of understanding of students in the learning process carried out online (online). Learning using e-learning in the presence of technology in the learning process makes students feel more interested and not easily bored and can improve student learning outcomes. The formulation of the problem in this study is whether the Flipped Classroom learning model has increased the learning outcomes of students in the learning process in the material scope of biology class X in SMA Negeri 4 Palangka Raya. This study aims to determine the application of the flipped classroom learning model to student learning outcomes, as well as to determine the response of students to the flipped classroom learning model using learning videos on the scope of biology in class X SMA Negeri 4 Palangka Raya.

This research is included in the type of quantitative research, this research uses only one class, namely the experimental class, using the One-Group Pretest-Posttest Design. The sampling technique used random sampling. This study used one class with a total of 24 students. Instrument test analysis to calculate the validity, reliability, level of difficulty, and differentiation test using the Anates application version 4.0.9. Cognitive learning outcomes were collected through the pretest and posttest using a multiple choice test instrument of 25 questions. The learning outcome data were analyzed using the analysis prerequisite test including normality test, homogeneity test and normalized gain test.

The results showed that the application of the online flipped classroom learning model could improve student learning outcomes in the subject of biology class X at SMA Negeri 4 Palangka Raya. The average pretest score was 52 while the posttest average score was 80.63. Based on the N-gain calculation, it was obtained 12.50% low-ability students, 70.83% medium-ability students and 16.67% high-ability students. Overall, the average N-gain value was 0.54 in the medium category, which means that the pretest and posttest results have increased learning outcomes.

Student Difficulties Understanding the Concept of the Colligative Properties of Solutions in Class XII IPA SMA Negeri in Palangka Raya Academic Year 2018/2019

Handayani Aris Susmiasih — 2021-11-01

Chemistry is a branch of natural science, in chemistry there are two types of understanding that must be mastered by students, namely conceptual understanding and algorithmic understanding. Colligative properties of solutions are one of the subjects in Chemistry Class XII SMA with the coverage of Boiling Point Increase, Vapor Pressure Drop, Freezing Point Depression, and Osmotic Pressure. This study aims to describe the difficulties of class XII IPA SMA Negeri in Palangka Raya for academic year 2018/2019 in understanding the concept of colligative properties of solutions.

This research is a descriptive research with a quantitative approach. The subjects of this study involved 267 students from 3 schools, each of which was taken as many as 2 classes. The data collection technique was carried out by TPKSKL using the Two-Tier Multiple Choice instrument and supported by an interview session.

The results showed that the average difficulty experienced by class XII IPA SMA Negeri in Palangka Raya City in understanding the concept of colligative properties of solutions was 66.3%. The percentage of difficulty in each concept includes; students' difficulty in determining the boiling point of the solution is 65.8%; students' difficulty in determining the decrease in vapor pressure of the solution by 64.9%; students' difficulty in determining the freezing point depression of the solution is 69.85%; and students' difficulties in determining the osmotic pressure of a solution of 64.4%.

Profile of Mastery of Hydrocarbon Compound Concepts in Class XI MIPA-2 Students of SMA Negeri 4 Palangka Raya for Academic Year 2018/2019

Okta Pirera — 2021-11-01

The concept of Hydrocarbon Compounds is one of the chemical concepts taught in class XI SMA. This study aims to describe the profile of mastery of the concept of Hydrocarbon Compounds in class XI MIPA-2 SMA Negeri 4 Palangka Raya in the 2018/2019 academic year. The subjects of this study were 35 students of class XI MIPA-2 SMA Negeri 4 Palangka Raya in the 2018/2019 academic year who had received lessons on hydrocarbon compounds. The data used in this study were in the form of lesson plans obtained from the teacher concerned, data on student concept mastery obtained through a description test of hydrocarbon compounds with a total of 18 questions out of 4 indicators and data from student interviews. The data obtained were then analyzed descriptively. The results showed that the mastery of the concept of hydrocarbon compounds in students was analyzed in terms of the achievement of each indicator of student mastery in indicator 1, namely identifying carbon compounds based on C, H and O atoms in carbon compounds by 51.4% including the medium category, indicator 2 which describes the peculiarities of atoms. 51.5% of carbon in carbon compounds is in the medium category, indicator 3 is describing alkane compounds, alkene compounds, and alkyne compounds of 74.6% including high categories, indicator 4 is describing ring compounds and closed chain compounds of 38.6% included in the low category.

Profile of Mole Concept Engagement in Class XI IPA-5 SMA Negeri 2 Sampit Academic Year 2018/2019

Uswatun Nurkamila — 2021-11-01

This research was a descriptive research. The research respondents were 30 students of class XI IPA-5 SMA Negeri 2 Sampit for the 2018/2019 academic year. The research data was obtained through lesson plans, tests, and interviews. The results showed that the average mastery of students' concepts was 64% and was in the medium category. 40% (12 students) of concept mastery are in the high category, 36.67% (11 students) are in the medium category and 23.33% (7 students) are in the low category. As many as 86% (in the high category) students were able to convert the number of moles to the number of particles, mass and volume of substances with mastery of. Meanwhile, 30% (in the low category) students are able to apply the mole concept in solving chemical calculations with mastery of concepts.