Learn about the physics of resistance in a wire. Change its resistivity, length, and area to see how they affect the wire's resistance. Predict how changing each variable will affect the resistance.
I just purchased crackle subway tile (3x6) for our backsplash. As I was shopping around it seemed that $12-15 per square foot was the average price. You can get cheaper but they were VERY basic. I ended up with a Sonoma tile which was hand molded and cost $20 square foot.
Higher-end stone backsplashes are often comprised of marble or granite, costing about $7.00 to $10.00 a square foot. At the higher end of the cost spectrum are metal tiles. While you can keep costs down using tile with a metal veneer, a full metal backsplash will cost between $15.00 and $25.00 per square foot. Metal tiles are available in many different materials and finishes, including brushed aluminum, matted stainless steel, bronze and copper, to name a few.