Penilaian kesiapan siswa dalam matematika membutuhkan alat ukur yang kuat berdasarkan prinsip-prinsip psikometrik yang baik. Studi ini meneliti penerapan Teori Tes Klasik (CTT) dalam menganalisis tes kesiapan matematika melalui platform perangkat lunak ANATES. Data dikumpulkan dari 214 siswa sekolah dasar yang menyelesaikan penilaian pilihan ganda 15-item. Analisis tersebut mengungkapkan koefisien reliabilitas sedang (0,68, 95% CI [0,60, 0,76]), dengan indeks diskriminasi berkisar antara 20% hingga 84,48%. Tingkat kesulitan item menunjukkan konsentrasi yang signifikan dalam kisaran sedang (73,3% item), sementara analisis pengalih menunjukkan kinerja yang luar biasa dengan 86,7% opsi dinilai sebagai "Sangat Baik." Temuan ini menunjukkan bahwa meskipun tes tersebut menunjukkan sifat-sifat psikometrik yang dapat diterima untuk penggunaan di kelas, peningkatan yang ditargetkan dalam reliabilitas dan distribusi kesulitan dapat meningkatkan efektivitasnya sebagai alat penilaian. ABSTRACTThe assessment of student readiness in mathematics demands robust measurement tools based on sound psychometric principles. This study examines the application of Classical Test Theory (CTT) in analyzing a mathematics readiness test through the ANATES software platform. Data were collected from 214 elementary school students completing a 15-item multiple-choice assessment. The analysis revealed a moderate reliability coefficient (0.68, 95% CI [0.60, 0.76]), with discrimination indices ranging from 20% to 84.48%. Item difficulty levels showed significant concentration in the moderate range (73.3% of items), while distractor analysis indicated exceptional performance with 86.7% of options rated as "Very Good." These findings suggest that while the test demonstrates acceptable psychometric properties for classroom use, targeted improvements in reliability and difficulty distribution could enhance its effectiveness as an assessment tool.

The purpose of this study was to evaluate the implementation of the in-service teacher professional education learning model in 2022 and whether the designed model is following the objectives of online learning and societal expectations in increasing teacher competence. The research method uses an evaluation method with a qualitative and quantitative approach. The evaluation model uses a combination of Content Stake and Kirkpatrick models. The research samples were studied program coordinators, lecturers, tutors, and in-service teacher professional education students at Jakarta State University in 2022 Phase 1. Data collection used questionnaires, interviews, and documentation. Instrument validation uses internal, construct, and empirical validity. Instrument reliability testing uses internal reliability with internal consistency. This evaluation research shows that lecturers and tutors must optimally utilize the Learning Management System (LMS) in online learning. The results of this study also show that there has remained a significant change in teacher competence from students who have passed in-service teacher profession education.

The Indonesia National Police must carry out reforms in an effort to provide excellent service to the community, including with a more humane, responsible and fair and transparent approach. One way to reform the police is that it must start from the education system in the police, namely when high-ranking officer candidates undertake education at the Police Science College (STIK). This condition underlines the importance of implementing an internal quality assurance system at the Police Science College (STIK). The implementation of an internal quality assurance system is used as the basis for controlling the quality management of higher education with national standards. There are several important exigencies obtained by the Police Science College (STIK) in the evaluation carried out by the internal quality assurance system which includes: (1) SPMI plays a role as a guarantee of educational quality standards, (2) SPMI plays a role as a guarantee of research quality standards and (3) SPMI acts as a guarantee of quality standards for community service. Keywords: Internal quality assurance system, Urgency, Police Science College

This study investigates the mechanical properties and microstructure of a novel composite material designed for automatic clutch pads. The natural fiber composite (NFC) consists of coconut fiber and wood powder reinforced with aluminum powder, aiming to increase strength. A series of experimental analyses, including tensile testing, compressive testing, hardness measurement, and microstructural examination, were conducted to thoroughly evaluate the composite. The results indicate a significant improvement in mechanical strength compared to commercial clutch pad materials. Additionally, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) analysis shows the distribution and interaction of natural fibers and aluminum powder within the composite matrix, shedding light on the reinforcement mechanisms. The tensile strength, compressive strength, elastic modulus, and hardness values increase with aluminum composition from 0 to 15%. However, at 20% composition, a decrease was observed. This research provides valuable insights into the development of high-performance natural composite materials for automatic clutch pads.

This study aims to review the use of virtual reality in safety training through a meta-analysis approach. The choice of topics in this study was motivated by the lack of studies related to correlations that discuss Virtual Reality" and "safety amid the high use of Virtual Reality in various aspects. The method in this study follows the Preferred Reporting for Systematic Reviews and Meta-Analysis (PRISMA). PRISMA was created with the aim of helping to ensure clarity and transparency of reporting, systematic reviews, and meta-analyses. The meta-analysis conducted resulted in the discovery of a large-size effect on the relationship between Virtual Reality and Safety. Based on the analysis with Jamovi, the results of the heterogeneity study obtained a value of Q = 170.487, a value of I2 = 96.25%, and Tau2 = 0.3825 (with SE = 0.1937). In addition, the effect size value is 0.67 (RE Model), the Eggers Regression value is -2.104, and in the forest plot image, it is known that the data represented by black dots are located inside the white triangle and are around the triangle.

This research aims to examine the results of previous research related to the learning environment and learning attitudes using a meta-analysis study approach. Based on the results of the analysis that has been carried out, it is known that the actual correlation results have an average of 0.676 and a Standard Deviation of 0.1220. And because the average correlation coefficient of the 3 studies is greater than 0, it can be concluded that from this meta-analysis study there is a positive influence of the learning environment on students' learning attitudes. This means that a good work environment can make learning attitudes more positive. Keywords: Learning environment, Learning Attitudes, Correlation Test, Metaanalysis