Corrections:
“As you can see, each MAC address consists of five groupings of two hex characters.”
– SIX groupings.
“Hexidecimal means based on a numbering system of sixteen.”
– “Hexidecimal” means my spelling isn’t that great. “Hexadecimal” means based on a numbering system of sixteen.
P.S.
If you see your kids connecting something looking like these devices to their computer, it’s time to ask questions: