Product overview A heat conduction demonstrator designed for middle school physics teaching to clearly show differences in thermal conductivity between solid materials. The device provides a simple, repeatable, hands on experiment that makes abstract thermal concepts visible. Key benefits Clear visualization of thermal conductivity differences: Identical rods in thickness and length conduct heat at different rates, producing sequential effects that are easy for students to observe and compare. Simple setup and operation: Designed for tabletop use with common classroom heating tools. The experiment can be run in minutes and repeated for multiple trials. Controlled comparison: All heat conduction rods have the same dimensions to ensure a fair comparison between materials. Durable and reusable: Built for repeated classroom demonstrations with straightforward maintenance steps to keep the device in working condition. Main features Function: Demonstrates heat conduction along solid rods and the relative thermal conductivity of different materials. Design: Heat storage block with multiple radially arranged conduction rods of equal thickness and equal length. Each rod has a shallow concave seat to hold a match stick upright. Operation components required: Heat source such as an alcohol lamp, matches, and a small amount of butter or similar grease to hold match sticks in place during the demonstration. Performance: As the heat storage block is heated, heat travels outward along each rod at a rate determined by material properties. Matches fall in sequence as their supporting spots reach ignition or softening temperature, creating a visible progression of heat transfer. How to use 1. Place the demonstrator on a flat tabletop, ensuring it sits balanced. 2. Apply a small amount of butter or grease into each concave seat on the conduction rods. 3. Insert a match stick upright into each seat so it stands securely. 4. Heat the heat storage block using an alcohol lamp placed at the specified position beneath the block. 5. Observe the sequence of matches falling as heat travels along the rods. Compare which materials conduct heat faster and which conduct heat slower. Maintenance and storage Allow the entire apparatus to cool completely before handling. Wipe the rods clean and apply a light coat of oil to protect metal surfaces as needed. Store the instrument in a safe place and avoid dropping or striking the conduction rods, which can deform them and affect experimental results. Suitable settings and applications Middle school physics classrooms for demonstrations on heat transfer and material properties. School laboratory sessions for hands on experiments and student measurement activities comparing thermal conductivity. Science fairs or instructional workshops to illustrate principles of heat conduction in a compact, visual format. What this demonstrator helps teach Relative thermal conductivity of common solid materials through direct observation. How heat travels through solids and how material choice affects heat transfer speed. Experimental technique and observation skills, including setting up controlled comparisons and recording results. Notes and safety reminders Use an appropriate heat source and follow general laboratory safety procedures when heating. Ensure the device is fully cooled before cleaning or storage. Handle conduction rods gently to maintain alignment and consistent experimental conditions.