How do you usually teach or visualize the Traveling Salesman Problem?

I’ve been thinking about how TSP is usually taught — most explanations are either very theoretical or use static examples.

I’ve been experimenting with a small tool to visualize how optimal routes change with different graph structures (including partially connected graphs).

I’m curious:

• What tools or methods have you found useful for teaching or understanding TSP?

• Do interactive demos actually help, or do people prefer step-by-step explanations?

Would love to hear how others approach this.