Human Excretory System Research Articles

PENGEMBANGAN E-COMIC BERBASIS PROBLEM BASED LEARNING (PBL) MATERI SISTEM EKSKRESI MANUSIA UNTUK MENINGKATKAN HASIL BELAJAR SISWA

This research was conducted because E-comic learning media based on Problem Based Learning material on the human excretory system was not yet available at Lolowau 2 State Junior High School and student learning outcomes did not meet the Minimum Completeness Criteria. The research applied is development research (Development Research) with the four D model. The results of the research obtained an average validity test score of 89.52%, practicality test by teachers 3.50 while students 3.57 and an average effectiveness test score 90.14 so it can be concluded that E-comic learning media can be applied in the learning process of human excretory system material in class Vlll.

Website-Based Electronic Module With SSI on Human Excretory System Material to Improve Cognitive Abilities and Critical Thinking

Website-Based Electronic Module With SSI on Human Excretory System Material to Improve Cognitive Abilities and Critical Thinking

Analysis of Junior High School Students’ Misconceptions About the Human Excretion Using a Four-Tier Diagnostic Test

This study aimed to measure middle school students’ conceptions and misconceptions related to human excretion using a four-tiered diagnostic test. Using a cross-sectional survey design, responses of 113 eighth-grade students, convenience sampled from two schools in Bandung were collected. A four-tiered instrument was developed specifically for the focus of this study and the data analyzed below consists of test results and interviews with teachers. The findings indicate that students’ conceptions of the human excretory system fall into several categories: scientific knowledge (SK) at 46.90%, false positive (FP) at 13.09%, false negative (FN) at 6.13%, misconception (M) at 20.45%, and lack of knowledge (LK) at 13.43%. The most common misconceptions relate to diseases and disorders (38%) and sweating and body thermoregulation (31%). These misconceptions may arise due to factors such as students’ lack of enthusiasm for learning and limited engagement during the learning process. Consequently, there is a need for improved teaching approaches to address misconceptions associated with human excretion and to foster a more comprehensive scientific understanding among students.

Developing STEM-PjBL worksheet to lift students' critical, creative, and computational thinking skill

This research aims to develop STEM-PjBL worksheets on eight-gr ade human excretory system material to lift students' creative, critical, and computational thinking skills. This R&D research uses the Borg & Gall model. The data collection instruments were interview sheets, validation sheets, questionnaire sheets, and also tests (pretest and posttest). The results show that the STEM-PjBL worksheet is feasible and practical as a learning instructional. The data on the effectiveness of learning media obtained an N-gain score of 88.7 (N-gain >70) and is included in the high category, this shows that STEM-PjBL worksheets can improve students' critical thinking skills. The average score for all aspects of the creative thinking assessment was 81% (creative) and the average score for computational thinking skills was 80% (very high). These results show that STEM-PjBL worksheets can improve students' creative, critical, and computational thinking abilities.

Development of E-Student Worksheets-Based on Guided Inquiry Assisted by Augmented Reality and Three Dimension on Human Excretory System Topic

21st century places students as an active subjects in the learning process. Electronic Student Worksheets based on guided inquiry and assisted by Augmented Reality (AR) and three-dimensional (3D) technology can facilitate the learning process that can be students centered in the era of rapid technological developments and the pandemic covid-19. The purpose of this research was to produce an electronic student worksheets based on guided inquiry assisted by AR and 3D on valid and practical human excretory system topic to be used in science learning at the VIII grade junior high school level. This study used research and development (R&D) methods with a 4D development model consisting of the stages defining, designing, developing, and disseminating, but in this study, there was no disseminate stage. The electronic student W\worksheets was tested on a limited basis to 32 students of class VIII G SMP Negeri 24 Malang. This study E- Student Worksheet Based on Guided Inquiry Assisted By Augmented Reality and Three Dimension on valid and practical human excretory system material used in science learning at the VIII grade junior high school level. The validity of the developed E- Student Worksheet obtained a percentage of 98.02% with a very valid category. The practicality of the E- Student Worksheet in terms of the assessment process, students obtained a percentage of 97% with a very practical category. Meanwhile, the practicality of E- Student Worksheet in terms of student responses obtained a percentage of 93.25% with a very practical category.

Development of Interactive Multimedia Learning Science-Biology Using Macromedia Flash 8 for Class VIII Students of SMPN 34 Padang

The purpose of this research is to produce interactive multimedia using Macromedia Flash 8 for class VIII students at SMPN 34 Padang with material on the respiratory system and human excretory system that is valid, practical and effective. The data collection instruments used were interactive multimedia validation sheets by 3 validator lecturers, interactive multimedia practicality questionnaires by science teachers and students, as well as observation sheets on cognitive, affective, psychomotor aspects and learning activities. The results of the validation assessment by the validator of interactive multimedia on material on the human respiratory system and excretory system showed an average value of 82.33% (very valid). The results of the practicality assessment by science teachers showed an average score of 85.51% (very practical) and the results of the practicality assessment by students showed an average score of 91.64% (very practical). The results of the effectiveness test of interactive multimedia using Macromedia Flash 8 from the cognitive, affective, psychomotor and student activity aspects show that interactive multimedia using Macromedia Flash 8 is very effective. Thus, it can be concluded that the interactive multimedia using Macromedia Flash 8 developed is very valid, very practical and very effective.

THE EFFECT OF PROJECT BASED LEARNING MODEL WITH STEM APPROACH TO STUDENTS’ CRITICAL THINGKING SKILL ON HUMAN EXCRETION SYSTEM

This study was aimed to determine the effect of Project Based Learning Model with STEM approach to students' critical thinking skills on Human Excretion System material in class 8th grade at SMP Negeri 37 Medan. This research used quantitative methods with the type of research quasi experiment with pretest-posttest control group design. The sample of this study consisted of two classes randomly selected by simple random sampling technique, namely in class VIII-D and VIII-F. The first sample is an experimental class that was taught using the PjBL-STEM learning model, and the second sample is a control class that was taught using conventional learning methods. The research instrument that was used included critical thinking skills test instrument using essay questions totaling 5 questions. Analysis of research data used the Independent Sample T-Test test using SPSS version 26.0. The pretest data results of students' critical thinking skills in class VIII-D and class VIII-F are 33.71 and 29.35. After obtained the results of the initial ability of students by looking at the pretest results in both classes, class VIII-D was selected as the experimental class and class VII-F as the control class. The posttest data in the experimental class and control class are 80.00 and 52.58. Based on the hypothesis test, the calculated t value is 12.761 > t table 1.671, and the significance value is 0.000 < 𝛼, with 𝛼 = 0.05, so H0 is rejected and Ha was accepted, which meant that there was an effect of the PJBL-STEM model on the critical thinking skills of students on the material of the excretory system. The influence of the PJBL-STEM model on students' critical thinking skills was categorized as strong with a cohen's d value of 3.242. It can be concluded that the PJBL-STEM model have an effect on students' critical thinking skills with a strong effect category.

Feature Selection using Information Gain on the K-Nearest Neighbor (KNN) and Modified K-Nearest Neighbor (MKNN) Methods for Chronic Kidney Disease Classification

Purpose: Kidneys has an important role in the human excretory system. Unhealthy kidneys can affect kidney function. It is important to know the symptoms of chronic kidney disease. One data mining technique that can be applied is the classification technique to determine whether a person has chronic kidney disease or not based on the symptoms (attributes) obtained from medical records. The symptoms of chronic kidney disease obtained amount to 24 symptoms or attributes,Methods/Study design/approach: In this research, the classification of chronic kidney disease is performed using the information gain feature selection method and the KNN and MKNN classification methods. The number of data used is 400 data with 2 classes, namely chronic kidney disease (CKD) and non-chronic kidney disease (non-CKD).Result/Findings: Based on the test results, it was found that the hemo (Hemoglobin) attribute has the highest information gain value, which is 0.6255. The best accuracy for the KNN classification method is 96.61%, and for the MKNN method, it is 98%. Novelty/Originality/Value: The purpose of information gain feature selection is to choose features or attributes that significantly influence chronic kidney disease. Keywords: Chronic Kidney Disease, Information Gain, KNN, MKNN

PENERAPAN MODEL PEMBELAJARAN RMS (READING, MIND MAPPING, AND SHARING) PADA MATERI SISTEM EKSKRESI MANUSIA UNTUK MENINGKATKAN HASIL BELAJAR SISWA KELAS XI

This research is classroom action research which is motivated by the low learning outcomes of students in the learning process in class. What influences low student learning outcomes is the lack of student activity in the learning process. Plus the learning process uses a monotonous lecture method. This research aims to find out whether applying the RMS (Reading, Mind Mapping, and Sharing) learning model to the Human Excretory System material can improve the learning outcomes of class XI MIPA 5 UPT SMAN 3 Wajo students. The subjects of this research were all students of class XI MIPA 5 UPT SMAN 3 Wajo for the 2022/2023 academic year, totaling 31 students. This research was carried out in 2 cycles, each cycle held 3 meetings. The learning process for each meeting is designed by applying the RMS (Reading, Mind Mapping, and Sharing) learning model. The instruments used were student activity observation sheets and student learning outcomes tests in the form of multiple choices. At the end of each cycle, a learning outcomes test is carried out. Based on the research results, it shows that there is an increase in student learning activities from cycle I to cycle II. In cycle I the percentages were 29.5%, 37.6%, and 46.2%. Meanwhile, in cycle II the percentages were 58.6%, 67.2%, and 78.4%. This was followed by an increase in student learning outcomes from cycle I with a percentage of 41.9% to 87.1% in cycle II. From these results, it can be concluded that implementing the RMS (Reading, Mind Mapping, Sharing) learning model, can improve student learning outcomes in Biology lessons in Class XI MIPA 5 UPT SMAN 3 Wajo.

Penerapan Model Pembelajaran Discovery Learning Berbantuan Leaflet untuk Meningkatkan Hasil Belajar Kognitif Siswa Kelas VIII

This research aims to determine students' cognitive learning outcomes by applying the leaflet-assisted discovery learning model to human excretory system material. This research is Classroom Action Research (CAR) with a quantitative descriptive approach, carried out in two cycles, with one meeting held in each cycle. The population in this study were all students at SMP Negeri 1 Blitar with the sample taken being 37 class VIII students. Data collection techniques include tests and documentation. The results of the research show that there is an increase in cognitive learning outcomes with the application of the leaflet-assisted discovery learning model. This is proven by the students' cognitive learning results in cycle I of 64.86% and in cycle II of 100%. The conclusion that can be drawn is that the application of the leaflet-assisted discovery learning model can improve the cognitive learning outcomes of class VIII students at SMP Negeri 1 Blitar on the structure and function of the human excretory system.

THE IMPROVEMENT OF STUDENTS’ CRITICAL THINKING SKILLS BY IMPLEMENTING 5E-LEARNING CYCLE MODEL IN EXCRETORY SYSTEM IN HUMANS TOPIC

Students require critical thinking skills, their development is constrained in Indonesia. This research, involving 21 8th-grade students in Bandung, aimed to enhance critical thinking on the human excretory system via the 5E learning cycle. This study used pre-experimental methods, researchers employed ACTA for assessment and objective tests for analysis. Data analysis using SPSS 24 revealed noteworthy improvement (p 0.05) in critical thinking skills, confirmed by a paired t-test (sig 2-Tailed 0.000). N-Gain showed a slight enhancement of 0.24. Critical thinking levels progressed from challenged thinker to beginning thinker. According to the modest progress, the 5E model shows the potential for improving students’ critical thinking in science education

Application of the Ethnoscience-Based Guided Inquiry Learning Model to Improve Science Process Skills in the Material of the Human Excretory System

This study aims to describe the implementation of learning, students' science process skills, and students' responses after participating in learning with an ethnoscience-based guided inquiry learning model on the material of the human excretory system. This research method uses a Quasi Experimental Design with the design "The Only Pretest-Posttest Control Group Design" whose research targets are students in class VIII-D SMPN 16 Surabaya as the experimental class, class VIII-A as the control class, each of which consists of 30 participants. Data obtained by observation, test, and questionnaire methods were then analyzed descriptively quantitatively. The results showed that the proportion of learning implementation was 87.94 in the experimental class for 3 meetings, said to be in the practical and effective category. In the experimental class, science process skills increased significantly with the aspect of predicting and concluding the N-Gain value, namely 0.8, which increased with the high criteria, drawing conclusions, namely 0,7, which experienced an increase in the degree of high criteria, and the observing aspect, which was 0,4 with the criteria moderate rise. Students responding to the implementation of the ethnoscience-based guided inquiry learning model to improve science process skills by 86.84% were categorized as very good. Based on the description above, it can be interpreted that the application of the ethnoscience-based guided inquiry learning model can improve students' processing skills in the material of the human excretory system.

The Influence of Guided Inquiry, Discovery Learning Models and Learning Styles on Learning Outcomes

This study was conducted with three objectives, namely: 1) to determine the difference in the influence of guided inquiry learning model and discovery model on student’s learning outcomes in science subjects on the human excretory system in class VIII of SMP Negeri 1 Kualuh Selatan ; 2) to determine the difference in the influence of visual, auditory, and kinesthetic learning styles on student’s learning outcomes in science subjects on the human excretory system in class VIII of SMP Negeri 1 Kualuh Selatan ; and 3) to determine the interaction between the two learning models and learning styles in influencing student’s learning outcomes in science subjects on the human excretory system in class VIII of SMP Negeri 1 Kualuh Selatan. The approach used in this study was a quantitative approach with a nonequivalent pretest-posttest group design with a 2x3 factorial treatment level. The research sample consisted of all students in class VIII1, totaling 28 students, and class VIII4, totaling 30 students, with the sampling technique using Cluster Random Sampling. The results of the study indicate that, firstly, students who were taught using the guided inquiry learning model performed better or excelled compared to students taught using the discovery learning model. Secondly, students who were taught using the visual learning style performed better or excelled compared to students taught using the auditory or kinesthetic learning styles. Thirdly, there is an interaction between the two learning models and learning styles on students' learning outcomes in science subjects on the human excretory system.

Improving Natural Science Learning Outcomes on the Topic of the Human Excretory System through Contextual Learning of Modeling Techniques for Grade VIII Students of SMP

The objectives in this study were: 1) to improve learning activities in Natural Sciences in class VIII B students of SMP Warga Surakarta, 2) to improve learning outcomes, especially learning outcomes in Natural Sciences through contextual learning methods modeling techniques about the Human Excretory System in class VIII B students of SMP Warga Surakarta. The method used is action research method. The research was conducted on class VIII B students of SMP Warga Surakarta in the 2022/2023 academic year, as many as 27 students consisting of 13 boys and 14 girls. The data collection techniques were carried out by observing student and teacher activities, tests, partner teacher responses, and monitoring classroom observations. From the assessment test of Natural Science learning outcomes for each cycle of class action always increases, namely; the percentage of pre-cycle KKM achievement is 29.62%, cycle I is 44.44% and in cycle II it becomes 100%. Based on student responses in the implementation of learning using modeling techniques, it becomes more fun, easier to understand, makes students want to be more active and creative, students can find or interpret more freely, and is not confusing. So that by using the modeling method in learning Natural Sciences can help students in increasing activity and learning outcomes in Natural Sciences.

Validity Test Development of Wizer.me-based Interactive Worksheet On Human Excretion System For Class VIII

When online learning was implemented, teachers are encouraged to use digital technology base for teaching. According to interview results with junior high school science teachers in Yogyakarta, Bekasi, and Lampung, the problem encountered is the lack of use of interactive worksheets because some teachers have not mastered today's technology. The material chosen is the eighth grade human excretory system because it has a complexity in many names of organs and processes that occur in these system. This research aims to develop, determine the validity and feasibility of interactive worksheet using Wizer.me on eighth grade human excretory system material. This research uses R&D methods and ADDIE model as a reference for research implementation. This article is limited to the development section, especially the validity test. To test the validity of the worksheets, the instrument sheets are used. There were two aspects that being validatet, material and media. This research had made 3 interactive worksheets using Wizer.me. The validation conducted by four validators consisting of one media expert, one material expert, and two science subject teachers. The results showed an average value of 93.2% with very valid criteria. Therefore, the interactive worksheets based on Wizer.me is eligible to be tested with revisions according to suggestions from the validators.

Development of STEM-based Science E-Module on the Human Excretory System Topic

Teachers generally lack sufficient knowledge about STEM approaches, so teachers have difficulty developing STEM-based modules. Our research aims to develop a STEM-based science e-module on the human excretory system topic that is suitable for use by junior high school students. We use a type of research and development (R&D) concerning the Borg & Gall development model modified by Palilingan. Data collection techniques using interviews and questionnaires. The research instruments used interview sheets, product validation questionnaires, and product practicality questionnaires. The results showed that: (1) the validity test by learning media experts obtained a score of 98.33% and was included in the very valid category (no need for revision); (2) the validity test by subject matter experts shows a value of 99.17% and is included in the very valid category (no need for revision); and (3) limited trials in small groups show a value of 93.40% and are included in the very practical category. Based on the research that has been done, the STEM-based science e-module on the human excretory system topic that is suitable for use by junior high school students is appropriate for use by junior high school students.

Effect of Multimedia Utilization on Increasing Students Learning Outcomes

This study aims to determine the effect of using multimedia on improving student learning outcomes on excretory system material in class XI SMA YPK Pematangsiantar. The total population of 64 people consisting of 2 classes and samples were taken by random assignment so that 2 classes were obtained, namely the control class (XI-3) 32 people and the experimental class (XI-1) 32 people. The control class was treated without using multimedia power point and the experimental class was treated using multimedia power point. Data analysis was carried out by finding the average (, standard deviation (S) and hypothesis testing (t test) at the significance level = 0.05. From the results of the study, the average post-test for the control class was 88 and the experimental class was 90.13 with a difference in learning outcomes of 2.13. From the results of hypothesis testing (t test) obtained tcount (2.790) > ttable (1.99) at a significance level of 0.05 and degrees of freedom (dk) = 62, then Ho rejected and Hais accepted, meaning that there is an effect of using multimedia power point to improve student learning outcomes on the material of the human excretory system in class XI SMA YPK Pematangsiantar. It was concluded that there was an effect of using multimedia on improving student learning outcomes in the material of the human excretory system of class XI SMA YPK Pematangsiantar.

Analisis Kemampuan Belajar Siswa dengan Penerapan Inkuiri pada Materi Sistem Ekskresi

Education plays an important role in improving the quality of human resources to create general welfare and educate the nation by forming a superior, quality, and competitive generation. This study aims to describe student learning outcomes in the biology learning process by using an inquiry learning model on the material of the human excretory system. This study uses the method of library research (library research), where the study is based on expert opinions about business ethics and its role in the company. In addition, this journal also uses the comparative study research method which aims to compare two or more variables to get answers or facts whether the comparison or not of the object under study. Based on the results of the discussion, it can be concluded that the inquiry learning model can improve students' critical thinking skills in biology subjects on excretion material. The use of inquiry learning models makes students able to understand the material well, plays an active role during the learning process, and improves students' critical thinking skills.
 Keywords: Inquiry, Excretion, Students

The Development of E-Leaflet Teaching Materials Using QR-Code in Human Excretory System Material

The Covid-19 pandemic was caused by the SARS CoV-2 virus which resulted in changes in almost all aspects of people's lives in the world. One of them occurred in the field of education. In the education sector, the learning process takes place online and requires a variety of additional technologies to support the learning process. During the online learning process, teaching materials are also needed that are appropriate to the conditions that occur. The purpose of this research was to develop appropriate teaching materials for use during the Covid-19 pandemic. The type of research used is research development or Research and Development (R&D).
 The validation test results carried out by media experts were 94.53% and the material expert validation results were 90.43%. In small-scale product trials, the final test results showed that only 13.9% of students did not pass. In the practicality questionnaire responses, students showed that 19% of students considered this teaching material practical and 81% considered this teaching material very practical. Whereas in the large-scale trial conducted in 3 classes with a total of 108 students, the final test results showed that only 7.4% of students did not pass. In the response questionnaire given to the teacher, the percentage results were 96.35% which was included in the very valid category. In the student response questionnaire, 11% of students considered this teaching material practical and the remaining 89% of students considered this teaching material very practical.
 Based on the results of the research that has been done, it can be concluded that e-leaflet teaching materials using qr-codes on human excretory system material are feasible and practical to use in the online learning process during the Covid-19 pandemic.

THE EFFECT OF PICTURE AND PICTURE COOPERATIVE LEARNING MODEL WITH THE ASSISTANCE OF FLASHCARD MEDIA ON STUDENTS' LEARNING OUTCOMES AT SMA NEGERI 3 WAINGAPU

This study aims to determine the effect of the cooperative learning model type picture and picture assisted by flashcard media on students' biology learning outcomes in the subject of the human excretory system. This study is a quasi-experimental study, with a pretest-posttest control group design. The sample in this study was class XI MIPA2 (experimental class) using the picture and picture type cooperative learning model assisted by flashcard media and XI MIPA3 (control class) using the conventional learning model. The sampling technique used is purposive sampling, conducted at SMA N 3 Waingapu, even semester, Academic Year 2022/2023. The research instruments were in the form of documentation and a written test of 50 multiple choice questions, consisting of 10 pretest questions and 15 posttest questions which were conducted in 2 meetings. The research data were analyzed using statistical tests, namely the Validity test, Reliability test, Normality test, Homogeneity test, t test (paired sample t test) using SPSS version 22. Based on the results of the analysis, the average posttest value for the experimental class was 77.70 and the control 55.2. The results of hypothesis testing with paired samples t test obtained sig (2-tailed) <0.05 (0.00 <0.05). This shows that there is an effect of using the picture and picture type cooperative learning model assisted by flashcard media on the biology learning outcomes of class XI students.