Designed for middle and school physics labs, this compact resistance teaching tool makes electrical concepts easy to explore through handson experiments. Key benefits Improves learning outcomes: enables students to actively test and visualize electrical principles, helping them understand resistance, current, and circuit behavior. Durable for classroom use: molded from polypropylene (PP) to resist everyday wear and provide longterm reliability in school environments. Spaceefficient design: measures 8.66 x 4.72 x 1.97 inches, small enough to store in classroom cabinets, lab trays, or student kits. Easy to operate: a simple interface lets students quickly adjust and measure resistance values during experiments, reducing setup time and minimizing confusion. What makes it stand out Built specifically for educational use, balancing rugged construction with straightforward controls so instructors can focus on teaching rather than equipment troubleshooting. Compact footprint and robust PP construction make it suited to repeated handling by students and transport between class sessions. Practical uses and scenarios Classroom lab exercises: use for guided experiments on Ohm's Law and series/parallel circuits to let students change resistance and observe effects in real time. Group projects and demonstrations: small size and easy controls let multiple student groups complete handson measurements during a single class period. Portable kits and field demonstrations: fits into mobile lab kits for demonstrations outside the traditional lab while maintaining durability under frequent use. Specifications and function Function: adjustable resistance for measuring and demonstrating electrical principles in middle and school experiments. Material: polypropylene (PP) for durability. Size: 8.66 x 4.72 x 1.97 inches for convenient storage and transport. This tool provides a reliable, easytouse solution for teaching resistance and fundamental circuit concepts, designed to withstand routine classroom use while keeping lab equipment organized and accessible.