On 31st December 24, Stage 5B learners embarked on a captivating scientific exploration to investigate how string tension affects sound transmission. Armed with simple materials—cups and string—they collaborated in groups to create functional “cup telephones.” The session kicked off with a discussion on sound propagation through solids, setting the stage for their hands-on experiment. By varying the tension of the string and observing the resulting changes in sound clarity, learners discovered that tightly stretched strings transmitted sound waves more effectively. This experiment provided a clear and practical demonstration of the role of vibrations in carrying sound.Beyond understanding scientific principles, the activity fostered teamwork, critical thinking, and problem-solving skills. The joy of discovery was palpable as learners engaged with the task, turning a simple concept into an enriching and memorable learning experience. Their enthusiasm highlighted the power of curiosity-driven education.