Description This iron powder is an essential tool for demonstrating magnetic field lines in middle and high school physics classes. The iron filings are nice for visualizing magnetic fields, making them an excellent education resource. The iron filings are designed to help students understand the principles of magnetism through hands-eye experiments. Features -Color:Black -Material:Iron -Size:12.00X6.00X6.00cm/4.72X2.36X2.36in -Education tool: demonstrates magnetic field distribution and magnetic lines of force through the movement of iron powder, vividly presenting the concept of magnetic fields in physics -Middle and high school use: iron oxide powder isideal for middle and high school physics teaching, helping students understand and grasp the basic principles of magnetic fields -Reusable demonstrations: iron powderallows for multiple magnetic field demonstrations, meeting the needs of both teaching and experiments -Easy to operate: specially designed for teaching, with a simple structure that iron oxide powderis easy to operate, convenient for students to conduct experiments and observations -Strong materials: iron filings aremade from iron, ensuring reliable using and clear demonstration effectsPackage list: 1 x bottle of Magnetic Iron Filing (500 G/ bottle)