A Brief But Clear Discussion of Accentual Verse

I was thinking about preparing a handout for class on the difference between syllabic, accentual-syllabic, and accentual verse (Gee, Professor, tell me more!), but I came across this excellent and highly readable discussion of what is, in fact, one of the most important and most misunderstood topics in the study of literature: prosody and scansion.

http://danagioia.com/essays/writing-and-reading/accentual-verse/ 

Dana Gioia is the former head of the National Endowment for the Arts and the current State Poet Laureate of California.