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In choosing the right learning model, a teacher must pay attention to students' abilities and choose a learning model that can motivate them to learn and develop their potential so they can overcome problems in life. Problem-Based Learning is considered a learning model that can help students maximize their potential and develop skills in solving problems in everyday life. This study aims to critically analyze the application of problem-based learning models in the field of study of Islamic Religious Education. Through a literature study approach, this study focuses on a critical analysis of the basic concepts, principles, and procedures for applying the Problem-Based Learning method in learning Islamic Religious Education. The results of the research show that in order to implement PBL in the learning process, teachers should follow the procedures or implementation stages. The procedure for implementing PBL is divided into several steps, namely: problem orientation, organizing students to study (in groups), investigation or data collection, developing and presenting work results, and finally; evaluation and reflection.

Virtual laboratories can provide real learning experiences through computer-aided simulations and activities. Virtual laboratory is rapidly developing its use in science learning because it is proven to provide significant benefits to the process and results of science learning during the pandemic. The limitations of laboratory facilities in genetics learning at the unkhair Biology Education Study program have encouraged the development of virtual practicum strategies and their use in genetic learning with modified free inquiry strategies on the topic of the structure and function of genetic material and reproduction of genetic material. The purpose of this study was to analyze the effectiveness of virtual laboratories based on student perceptions of the use of virtual laboratory applications and to describe and compare these perceptions with the use of laboratory reality and relevant previous research results. There are five aspects of perception surveyed, namely innovation, motivation, effectiveness, benefits, and presentation of practical procedures. This research method uses a quasi-experimental research design for the characteristics and effectiveness of using virtual laboratories and real laboratories in the Genetics course at the Biology Education Study Program, Khairun University, Ternate on the topic of DNA isolation, chromosomes and mitosis. The results of this study indicate that: the characteristics of Blended Learning practicum in the Genetics course in 4th semester students of Biology study program are: 1) instruction-based practicum; 2) practicum based on data collection and reporting of practicum results; 3) practicum based on proof of concept. The effectiveness of the implementation of genetics practicum in laboratory reality and virtual laboratories based on the perception of student responses is more likely to choose reality laboratories than virtual laboratories. The effectiveness of the implementation of genetic practicum based on the results of the practicum report is known to be not significantly different between the results of the practicum in reality and in the virtual laboratory.

The research aims to determine the application of the Raw Material inventory Accounting System at PT  Industri Kapal  ndonesia (Persero). The type of research used s descriptive qualitative. Data obtained through observation, interviews, and documentation. The research conducted from July to September 2021. The results showed that the accounting system for raw material inventory at PT Industri Kapal  Indonesia (Persero) has been effective, this can be seen by the existence of  interrelated functions. Then the  inventory recording method used  is the perpetual recording method and the FIFO (First  In First Out) valuation method. And the procedures that form the inventory system at PT Industri Kapal  Indonesia (Persero) are quite good because of the division of tasks and documents that can be accounted for.