This master's thesis presents the development of activities with refrigerator magnets in physics classes. The activity was designed based on the ISLE (investigative science learning environment) approach, which is one of the most effective approaches for teaching physics. The approach is based on developing the scientific skills that today's labor market expects from young people. These skills are those used by professionals (researchers) in their work, such as working in a group, proposing one's own hypotheses, proposing experiments that test those hypotheses, and making judgments based on comparing the results of experiments to a given hypothesis. To develop these skills, the teachers who use the ISLE approach use so-called activities. An activity is a thoughtfully designed task where students acquire knowledge in an active, non-traditional way. In doing so, they consolidate already acquired knowledge, use different representations, and independently come to a physically feasible explanation of complex physical phenomena.
The activity developed in this work is focused on the magnetic structure of an everyday "tool" - a refrigerator magnet, and on the magnetic field it creates. The originally designed activity was tested on several different test groups. After the initial testing, a thorough analysis and comparison of the results between the different test groups was carried out. The analysis was the basis for creating guidelines that will serve for further improvements and further testing of the activity.
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