Newton's Laws about Motion: This model is specifically designed to demonstrate Newton's laws about motion in a clear and engaging way, making complex concepts more accessible for studentsMaterialThe inertia ball stationary object demonstrator is made of metal material that ensures its longevity and functionalityCompact SizeThe inertia demonstrator measures 10cmx7cmx5cm/3.94inchx2.76inchx1.97inch, making it compact and easy to handle during experiments or demonstrationsEducational ToolPhysics Mechanics Experimental Equipment, ideal for physics teaching and learning, this demonstrator helps in understanding the concept of inertia in a practical wayWide ApplicationInertia Demonstrator Physics Demos is great for home, school class use. Also ideal Birthday and Christmas gift for kids, children in middle school, can enjoy DIY experiments fun while learning basic physical science knowledge Specification: Material: Metal Size Chart: 10cmx7cmx5cm/3.94inchx2.76inchx1.97inch Package Includes: 1 setInertia Demonstrator Physics Teaching Equipment