This article focuses on a reconceptualization of the nature of instruc
tion in grammar for the acquisition-rich, communicative classroom. Beg
inning with the acknowledgment that comprehensible meaning-bearing inp
ut is necessary for second language acquisition, traditional instructi
on as explanation plus output practice is questioned. It is then sugge
sted that grammar instruction would be more congruent with overall ins
truction if it were input oriented The article then outlines a type of
input-based instruction in grammar called ''processing instruction,''
citing empirical evidence for its usefulness in addition to offering
suggestions for continued exploration of grammar instruction.