This current magnetic field demonstrator kit makes invisible magnetic fields visible and easy to teach. It is ideal for classroom demonstrations, handson physics learning, and children's science projects. The kit is projectable, durable, and simple to assemble, helping students observe field shapes, directions, and practice left and right hand rules. Key benefits Visualizes current magnetic field lines so students can see shape and direction rather than only read about them Projectable design enables clear group demonstrations and easy classroom viewing Lowvoltage operation and simple setup reduce preparation time and increase classroom efficiency Durable transparent PVC shells protect components while allowing intuitive observation Main features Three field configurations included: linear current magnetic field, solenoid magnetic field, and circular magnetic field for a range of experiments Projectable type that supports clear observation of demonstration process and results Transparent, quality PVC casing with good toughness and impact resistance Four small magnetic needles used on a transparent plastic plate to map field lines Operates on 6 to 8 VDC for straightforward connection and safe classroom use Supports substitution of an iron sheet in experiments to demonstrate induced magnetism around a DC conductor How it helps teachers and students Makes abstract concepts tangible by showing how field lines arrange around different conductor shapes Facilitates stepbystep experiments to reinforce left hand rule and right hand rule learning Supports group teaching by projecting results onto a screen or whiteboard so the whole class can observe simultaneously Typical use scenarios Classroom physics demonstration: Teacher projects the linear, solenoid, or circular setups to show magnetic field direction and explain the left and right hand rules Student laboratory exercise: Small groups assemble the components, place the four magnetic needles, apply 6 to 8 VDC, and record needle deflection patterns Science fair or project work: Students use the kit to demonstrate the presence of a magnetic field around DC conductors and test with an iron sheet to show magnetic induction Quick setup guide 1. Place the four small magnetic needles on the transparent plastic plate for the chosen field configuration. 2. Assemble the linear, solenoid, or circular conductor setup as required. 3. Apply 6 to 8 VDC and observe needle deflection to map field lines. 4. Optionally magnetic needles with an iron sheet to demonstrate magnetic effects on ferrous materials. What to expect Clear, repeatable visualization of magnetic field shapes and directions Robust transparent housing that withstands classroom use Easy assembly suitable for students and instructors with basic electrical familiarity This demonstrator kit is a practical teaching tool for visualizing current magnetic fields, reinforcing electromagnetic principles, and supporting interactive learning in classrooms and science projects.