The Day and Night Working Model for School Science Project is an educational DIY STEM model designed to help students understand the concept of Earth’s rotation and how day and night occur. This hands-on learning tool visually demonstrates the movement of the Earth in relation to the Sun, making complex geography and astronomy concepts easy to explain. Ideal for school science exhibitions, classroom demonstrations, and viva exams, this DIY model is suitable for Class 6 to Class 10 students. It supports CBSE, ICSE, and State Board learning requirements and helps students confidently demonstrate the concept during science fairs and school activities. The model is battery operated and designed for student use. It comes as a DIY project that needs to be assembled by the user, providing an engaging hands-on building and learning experience. The globe, Sun LED mechanism, base, stand, connecting wires, and other required components help students build and understand the working model themselves. Once assembled, the globe and illuminated Sun demonstrate how sunlight falls on different parts of the Earth, helping explain the occurrence of day and night. This DIY STEM-based science project encourages curiosity, creativity, practical skills, and learning by doing, making it a useful educational aid for both home and school use.