Identifying the mastery of research statistical concept by using problem-based learning

The depth of science material in schools is related to the teacher's ability to master science concepts. A good teacher is a teacher who is able to compile the concept of science material in a planned manner. Such planning is for example compiling material in-depth or broadly, so that later students are able to master the concept optimally. This article aims to analyze the depth of science learning materials and students' conceptual mastery of the material presented by the teacher. Data were obtained by observing the delivery of concepts and duration used by the teacher and students' mastery of concepts from questions in the form of a description of 6 questions. The sample used is a science teacher and 22 students. The results showed that the teacher conveyed the material not in-depth because there were several concepts with incomplete or separate sub-concepts. As a result, students' mastery of concepts is low even though in question number 3 about the concept of the lithosphere, most of the students on average answered correctly and correctly when compared to the answers to other questions. The high mastery of students' concepts is because the sub-concepts conveyed by the teacher are only mentioned and are not explained in-depth, while the low mastery of students' concepts is because there are too many supporting sub-concepts and the concepts are too deep, thus requiring students' critical thinking skills.

The results of the pre-research concept mastery test showed students' low mastery of redox and electrochemical concepts. The aim of this research is to produce an Android-based interactive multimedia product integrated with PBL that is valid, practical and effective in the form of an APK. The research method is Development Research referring to the ADDIE development procedure. The research was conducted in the odd semester of 2022/2023. The research sample are 70 students of class XII MIPA SMA N 10 Pekanbaru. Data was collected through multiple choice tests, essays, questionnaires. The developed product was validated by 3 material experts, and 3 media experts. The practicality tes was carried out by 4 chemistry teachers, 11 students in the one to one and small group stages. The implementation test was carried out at SMA Negeri 10 Pekanbaru. The average validation results by material experts were 94.8% with very valid criteria and the average validation results by media experts were 95.8% (very valid). Practicality results for 4 chemistry teachers, it was 91.3 in the very practical category and 88.8% for 11 students in the very practical category. The n-gain test results showed an increase in concept mastery in the experimental class, namely 0.7 in the medium category and the control class with an n gain value of 0.3 (low). Based on the research results, it was concluded that the product that had been developed could increase students' mastery of concepts.

This research aimed to determine the improve in mastery of students' physics concepts through the application of an advanced organizer model on material momentum and impulses. The research method used was quasy experiment with pretest posttest control group design. The research population is all students of class X MIPA SMAN 1 Rumbio Jaya which is a sample of research with class X MIPA 1 as an experimental class totaling 23 students and class X MIPA 2 as a control class of 24 students. The research instrument used the concept mastery test questions. Data were analyzed descriptively by looking at absorption, learning effectiveness and the results of students' concept mastery scores and analyzed inferentially using the T-test. Descriptive analysis results obtained an average absorption of experimental class students by 81.61% with the effectiveness of learning categorized effectively. Furthermore, for the mastery of the concept of each experimental class indicator on the first and second indicators obtained very good categories, the third indicator obtained the medium category and the fourth indicator with a low category. The results of inferential analysis obtained a significant increase in the mastery of student concepts in the class applying the Advance Organizer learning model to the classroom with conventional learning. Based on the results of the research, the advanced organizer learning model can improve students' mastery of the concepts in the material momentum and impulses of class X SMAN 1 Rumbio Jaya.

This study aims to determine the increase in students' mastery of concepts in Newton's Force and Law material by applying the Discovery Learning model to 10th grade students of Public Vocational School 1 Bireuen. The research used was quasi-experimental research with Pretest-Posttest Group Design. Data was collected in 10th grade TKRO (Automotive Light Vehicle Engineering) as an experimental class with 38 students and 10th grade TBSM (Motorcycle Business Engineering) as a control class with 38 students. Data obtained from the results of this study using SPSS for Windows Version 18. Based on the results of data analysis to see the results of mastery of students' concepts obtained an average value of 85.16 and the control class average value of 79.95. Data obtained from the test results are used to test the research hypothesis using the Independent Sample T-test and N-Gain test. From the results of the analysis obtained from the results of the Independent Sample T-test results of the initial and final test values obtained tcount> ttable is 3.901> 1.992 with sig (2-tailed) of 0.00 lower than 0.05. The N-Gain value in the experimental class was 42.24%. Whereas the control class was 38.96%. The results of the analysis of student responses using the Discovery Learning model obtained the percentage of strongly disagreeing at 8.2%, disagreeing at 12.3%, agreeing at 48.1%, and strongly agreeing at 31.2%. Based on the results of the study it can be concluded that with the Discovery Learning model the mastery of students' concept mastery especially on Newton's Force and Law material is more improved than using conventional learning models

Increasing Motivation and Ability to Mastery Students' Concepts on Material Structure of Plant and Animal Networks Through Media Biology Quartet Card (BQC). This study aims to improve the motivation and mastery of students' concepts in the material structure of plant and animal tissue in class XI SMA using the media Biology Quartet Card (BQC). The research method is Classroom Action Research with two cycles. The research subjects were 32 students in class XI IPA of SMAN 4 Kota Sukabumi. The research instrument uses motivation questionnaires as well as questions about mastery of concepts with multiple choice questions. The results showed that the average student motivation was 73.5% in participating in learning using BQC. As for the acquisition of the concept mastery value, the average in the first cycle was 48.08 and the second cycle increased to 70.41.

This interactive E-module development research aims to improve students' critical thinking skills and mastery of problem-based concepts on digestive system material. The research method used is R&D (Research and Development) with a qualitative descriptive approach. The software needed to develop this E-module is Articulate Storyline 3. The validation results from the assessment of students obtained the percentage of material in the E-module by 90%, the contribution of problem-based interactive E-module to improve thinking skills and mastery of concepts by 89.92%, and the ease of operation of problem-based interactive E-module by 89.11%. So that the average percentage is 89.67, where the presentation shows a very decent category. Thus, problem-based interactive E-modules to improve students' critical thinking skills and mastery of concepts on digestive system material are worthy of being used as a source of learning for learners.

The fast development of internet and mobile technologies prompt this study. Mobile learning technology is accessible and convenient, as students can use advantageous devices to acquire knowledge at any time and location. Mobile learning can effectively meet students' educational requirements in acquiring knowledge. Furthermore, the design of learning materials that are inappropriate for mobile learning might be attributed to one of the reasons of students' cognitive stress. The purpose of this study is to see how mobile learning (Edmodo) on excretory system content affects cognitive load and student concept mastering. This research used a quasi-experimental method consisting of two classes: the experimental class (using mobile learning) and the control class (conventional learning). The instrument used to measure cognitive load consisted of questionnaires of intrinsic cognitive load, extraneous cognitive, and germane cognitive load, while the instrument for mastery of concepts consisted of pre-test and post-test. In addition, there was also a student response questionnaire to review the use of mobile learning in the experimental class. The data that had been collected were analyzed by a descriptive statistic method using SPSS 25.0. The results show that students in both classes have a cognitive load that can be controlled, but the cognitive load in the experimental class was more controllable than in the control class. The result of mastery of concept showed that the experimental class was higher than the control class, with a post-test significance value of 0.001 <0.05. Thus, it can be concluded that mobile learning influence the excretory system material on the cognitive load and mastery of students' concepts.

Prior knowledge is one of the important factors that can affect the effectiveness of absorbing new information or concepts that students will learn. This research aims to know the mastery profile of students' concepts (prior knowledge) on hydrostatic pressure material. Descriptive research is applied in this study to realize these goals. This research was conducted at SMAN VII Mataram with a total sample of 44 students spread over four classes. Samples were taken using a simple random sampling technique. The data collection tool in this study was a concept mastery test instrument consisting of 14 questions. This test instrument measures students' mastery of concepts from cognitive level C1 (remembering) to cognitive level C4 (analyzing). Data on test results were analyzed by calculating the average percentage of students who could answer questions correctly according to the cognitive level being tested. This percentage is used as an indicator to measure the student's mastery of concepts on hydrostatic pressure material. Based on the results of data analysis, it was found that the level of student's mastery of concepts for cognitive level C1 (remembering) was 70.45%, cognitive level C2 (understanding) was 31.36%, cognitive level C3 (applying) was 27.73%, and cognitive level C4 (analyzing) was 18.94%. It can be concluded that students' mastery of concepts, especially at cognitive levels C2-C4, is still very low.

This study aims to find out the ability to master the concept of high school students in grade X on newton’s law subject. Mastery of concepts is a very important component in the study of physics. The research method used is descriptive quantitative. The study subjects consisted of 36 students consisting of 24 women and 12 men with an average age of 15-16 years at one of the high schools in Duri city. The research instrument consists of 25 items of multiple-choice questions. The cognitive dimension of multiple-choice questions consists of C1-C6 levels based on bloom’s revised taxonomy. The data analyzer uses a Rasch model based on logit values obtained by Winstep software-assisted students. The results obtained an average value of 0.57 and a standard deviation of 1.33. From this score were found 3 quality groups of mastery of student concepts, namely; quality groups of students with high, medium and, low categories. Overall, the percentage of students’ concept mastery skills is in a low category. The results of this study contribute information and description to teachers about the condition of students’ concept mastery ability. Teachers can make various efforts and innovations in learning to improve the mastery of student concepts.

Efforts to improve the quality of Integrated Science learning for junior high schools in the era of globalization that are following the challenges of 21st-century education can be done through the use of connected type interactive e-modules. The study was conducted to determine the effectiveness of the e-module on students' mastery of energy concepts. The research method used is a descriptive quantitative quasi-experimental type with a matching-only pretest-posttest control group design. The research was conducted in one of the public junior high schools in Bangkinang with a purposive sampling technique. Data were collected using research instruments in the form of mastery of concepts in energy material. Data analysis was performed using pre-requisite test, statistical test (different test; t-test), and N-Gain test. The results obtained show that the use of the connected type of integrated science interactive e-module can improve students' mastery of concepts on energy material in the experimental class with the medium category.

This research aims to analyze the application of discovery learning to physics learning during the COVID-19 pandemic. This research method is a study of literature and journals, as many as ten journals that can be accounted for related to the application of discovery learning research models to physics learning during the COVID-19 pandemic in Indonesia. The study was analyzed using qualitative descriptive analysis with paper review technique. It was concluded that: 1) The application of the discovery learning model to physics learning during the COVID-19 pandemic can improve student understanding, students’ critical thinking ability, and mastery of student concepts. 2) The use of online learning tools and discovery learning-based e-modules can improve students’ mastery of concepts in physics learning during the COVID-19 pandemic. 3) The advantages of the discovery learning model in physics learning during the COVID-19 pandemic are that it can improve cognitive abilities and form students’ disciplined and positive attitudes. 4) The flexibility of the discovery learning model in physics learning during the COVID-19 pandemic is that students have difficulty understanding the material, and teachers find it difficult to present the material, so the application of the discovery learning model in physics learning during the COVID-19 pandemic in Indonesia is not all effective.

The aim of this research was to obtain the implementation of value-based Project Based Learning (PjBL) model toward high students learning outcomes. This research was implemented at high students with 35 people that took the purposive sampling. The Research method used weak experiment with one group pretest-posttest design. The result showed that student’s ability of concepts showed well with 62,85 % students passed and gain index of 52,2 % (sufficient The level of student acceptance of science scores is included in the high category and the gain index reaches 11% (low). Students' attitude based on observation results has a value of 3.75 (very good). The results of the questionnaire processing show that all students experience problems during learning, especially when designing projects. The results of calculations with the t-test show that the Project Based Learning Value Model influences the mastery of students' concepts and attitudes. The results of calculations with Spearman correlation show that there is a positive relationship with a low category (r = 0.2) between mastery of concepts with students' attitudes towards the acceptance of science values.

The purposes of this research are to increase creative thinking skills and concept mastery of students in the material buffer solution using Problem Based Learning (PBL) model. The method which is used quasi experiment method with one group pretest –posttest design. The research subjects were 31 students in grade XI school stubs on one of the main international school in the town of Cimahi, West Java. The techniques of data collection are done through a written test like 12 essay question, student worksheets, student questionnaires and teacher interviews. The data is analyzed by statistical tests using SPSS version 16.00 and a descriptive analysis. The results showed that the learning process according with 5 stages in the PBL model; over all creative thinking skills and concept mastery increased significantly with the average N-gain = 0.61; indicators of creative thinking skills that experienced the highest increasing is “elaboration”, N-gain = 0,70; label concepts that experienced the highest increasing is the calculation of pH buffer solution, N-gain=0.86 and PBL model got a positive response from teachers and students.Keywords: buffer solution, creative thinking skills, concepts mastery, problem based learning

This research aims to analyze the progress of mastery of the concept of Work & Energy and the concept of Dynamic Electricity with the application of media-based learning in the Virtual PhET laboratory. This type of research uses descriptive research to describe the object studied against the sample, namely students of the physics education study program, FKIP University of Cenderawasih. Collecting research data using a concept mastery test instrument given at the end of the lecture through a written essay test with 9 questions. This test is given to determine the mastery of students' concepts after taking lessons on the concepts of Work & Energy, and Dynamic Electricity. The test result data were analyzed based on the student's concept mastery assessment score. The results of the research obtained for concepts 1 and 2 mostly obtained very good and good categories of 63.50%, sufficient percentage category of 12.00%, and less and very poor categories of 21.00%. Therefore, the application of learning concept 1 and concept 2 based on the Virtual PhET laboratory media during the covid-19 pandemic for Cendrawasih University physics education students progressed to better mastery of concepts with the largest gains in the good and very good categories.

Post-pandemic policies encourage teachers and students to carry out learning in offline, where they used to go online before. One learning strategy that can be applied in this condition is blended learning, which combines the advantages of offline and online learning. In improving the quality of learning outcomes and developing students' 21st-century skills, especially argumentation skills, blended learning strategies can be combined with inquiry-based learning models, one of which is the revised Argument-Driven Inquiry (rADI). This study aims to obtain an analysis of data related to the application of blended learning with rADI model in improving students' argumentation skills and concept mastery in Monera materials, especially regarding Bacteria. The research method used in this study was pre-experimental with a one-group pretest-posttest design. This research was conducted on students of class X MIPA at a high school in Bandung which consisted of 26 students. The data were obtained from the pre-test and post-test results of argumentation skills and concept mastery, and questionnaires on students' responses to learning. The results showed an increase in students’ argumentation skills with an N-Gain score of 0.81 and students’ concept mastery with an N-Gain score of 0.78 after applying blended learning with rADI model. The increase in argumentation skills and concept mastery was significant with N-Gain scores included in the high category. In addition, students' response data showed a good response to the application of blended learning with rADI model.