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This research was motivated by the lack of availability of tools and practical guides for measuring fluid temperature, which made it impossible to conduct practical activities. The aim of this research is to develop a tool for measuring liquid temperature that is suitable for practical activities in the UNIMA physics laboratory. This research is a research development (research and development) that consists stages, namely preliminary studies, literature research, design of internship tools, production of internship tools, validation of experts/ experts, revision 1 (improvement 1), functionality test, validation of experts/ emperts, revision 2 (improvement 2) and reporting. The data was collected through experiment and expertvalidation. The test results of the practical tool for measuring the temperature of this liquid show the highest percentage of errors at 2,3%, while the validation by materials experts and media experts for tools and practical guides for measuring the liquid temperature is in the range of 90-100%. Based on the results of the study, it can be concluded that a tool and practical guide for measuring fluid temperature with valid or proper qualifications has been created.

The Discovery Learning model is a series of learning activities that maximally involve all students' abilities to search and investigate systematically, critically, and logically. so, they can find their own knowledge, attitudes, and skills as a form of behavior change. The purpose of this study was to determine the effect of the Discovery Learning Model on Student Learning Outcomes at SMP Negeri 2 Tabukan Utara. The method used in this research is pre-experiment using one group pretest-posttest design. The sample of this research is the students of class VIII, totaling 16 people. The results of the Paired Sample Test analysis with the help of the SPSS program, it is known that the significant value is 0.000, this means less than 0.05, then H0 is rejected and Ha is accepted. These results indicate that there is an average difference between pre-test and post-test learning outcomes, which means that there is an effect of using the Discovery Learning model on student learning outcomes.

This study aims to determine the effect of using instructional video media on the learning outcomes of high school students in class X on energy materials. This research was conducted at SMA Negeri 1 Beo. The research design used a pretest posttest control group design, with the research sample being the experimental class and the control class. The experimental class was treated with learning using video while the control class did not use video. The instrument used in the study was a multiple-choice test. Based on descriptive statistical analysis, the average value of the control class was 6.48 and the average value of the experimental class was 7.86. Based on the results of the independent simple t-test, the value of -ttable > tcount then Ha is accepted and H0 is rejected. So it can be concluded that there is an effect of using instructional video media on student learning outcomes. The use of learning video media has a good influence on student learning outcomes.