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The degradation of methylene blue dye via tribocatalysis using 0.5Ba(Zr0.2Ti0.8)O3‒0.5(Ba0.7Sr0.3)TiO3 (BST‒BZT) ceramic powders was investigated under various conditions. The tribocatalytic process was initiated using magnetic stirring with a polytetrafluoroethylene‐coated magnetic bar in a glass beaker setup. The degradation efficiency was evaluated at different stirring speeds of 300, 500, and 700 rpm. The results showed significant variation in degradation rates, with the highest degradation efficiency of ∼73% achieved within 12 h at a rotational speed of 700 rpm. Additionally, the impact of pH on the degradation process was examined by adjusting the dye solution to pH levels of 3, 6, and 9. The degradation efficiency increased with higher pH levels, with the maximum degradation occurring in the basic medium (pH 9). Kinetic analysis revealed that the degradation process adhered to pseudo‐first‐order kinetics, with rate constants of 0.023, 0.035, and 0.104 min⁻1 at different stirring speeds of 300, 500, and 700 rpm, respectively. This study showcases the potential of BST‒BZT ceramics as efficient tribocatalysts for degrading organic pollutants in wastewater, emphasizing the impact of stirring speed and pH on degradation efficiency. [ABSTRACT FROM AUTHOR]

Environmental sustainability and the effective use of renewable resources are critical subjects that need to be integrated into our educational systems through practical, hands-on learning. This paper focuses on the fabrication of aluminium-air batteries using waste materials, providing an innovative and cost-effective DIY approach to energy storage education. Utilizing aluminium from food packaging and graphite from pencils, this study demonstrates the construction and functionality of an aluminium-air battery to run an LED, highlighting its potential applications in educational settings and low-cost energy solutions. The paper aims to inspire the adoption of environmentally friendly practices and enhance students' understanding of electrochemical energy conversion through accessible and engaging DIY projects. [ABSTRACT FROM AUTHOR]

This study investigates the application of a Wheatstone bridge, specifically through the utilization of a meter bridge constructed on chart paper using pencil graphite. Employing the Wheatstone bridge principle, this study aims to achieve precise measurements of an unknown resistance. Results indicate an error margin between measured and calculated values of less than 10%, highlighting the efficiency and accuracy of this approach. The demonstrated effectiveness of the meter bridge serves as an educational resource, particularly beneficial for K-12 students, providing practical understanding and hands-on experience with the meter bridge concept. This research contributes to enhancing STEAM education by offering a tangible and accessible tool for teaching electrical circuit principles. [ABSTRACT FROM AUTHOR]