A Mnemonic Device
Whizzing the dial of a locker around from number to number and hearing the cool metallic click as it opens is one of the great joys of going school. Forgetting your combination, fumbling around with the lock until you're late, then frantically running to class without the right book, which is still inside your locker? Hmm...teach your kid how to use a letter code to remember numbers. My favorite is Bacon Rumps.