Educational teaching material for experiments with step-by-step instructions for practical learning, fostering enjoyment of learning and scientific insights, including a three-way semiconductor. Physical science teaching aid that enhances children's imagination and practical abilities through interactive activities; includes an optical experimental device. Device with three light sources for scientific experiments; helps train practical skills in students; suitable as an instrument for physics lessons. Optical tools: a great set for students to learn the principle of light reflection; includes optical experiment tools. Key benefits - Ready-to-use experiments with clear directions save preparation time and provide structured learning paths. - Hands-on, interactive design supports inquiry-based learning and strengthens understanding of optics and semiconductor concepts. - The kit combines a three-way semiconductor with a multi-light-source setup in one package, enabling diverse demonstrations in a single teaching aid. Use scenarios - Classroom optics unit: use the device with three light sources to demonstrate light reflection, refraction, and related optical phenomena through guided experiments. - Electronics or semiconductor module: explore the behavior of the three-way semiconductor with practical exercises. - Home or after-school learning: follow the included instructions to reinforce concepts in physics and experimental technique.