This unit visually reinforces heat conductivity lessons. Five Metals Included Metals: Aluminum, Brass, Copper, Nickel, and Steel All Required Materials Included Instructions Included Students Gauge What Metal Heat Best It demonstrates how five different metalsâ€” aluminum, brass, copper, nickel, and steelâ€” conduct heat. The five rods are heated over a flame simultaneously, and students gauge what metal conducts heat best by observing how fast the wax at the tip of each rod melts. The apparatus comes with all materials including a wax block and instructions. A required heat source is available separately.