Description This product is designed for middle school physics and elementary science experiments, focusing on the principles of thermal expansion and contraction. It includes various tools and materials that allow students to observe and measure how different materials respond to temperature changes. The kit is ideal for classroom demonstrations and hands-on learning. Features -Color:Multi -Material:Copper + Plastic -Size:15.00X2.50X1.00cm/5.89X0.98X0.39in-Unique experimental material: demonstrates the phenomenon of thermal expansion and contraction, allowing students to understand the principles more intuitively.-Enhances learning interest: helps students engage in middle school physics and elementary science experiments, boosting their interest in learning physics and practical skills.-Develops scientific skills: using the experimental materials, students can improve their observation, experiment design, and data analysis abilities, enhancing their scientific literacy.-Versatile teaching tool: suitable for various teaching scenarios, including laboratories, classrooms, and science exhibitions, meeting the needs of different grades and subjects.-Safe and reliable: ensures the health and safety of students, providing a secure environment for conducting experiments.Package list: 1 Set x experimental materials