The following links will aid classroom teachers in assisting ESL students in the mainstream classes :

 This is the hand-out from the 2002 New Jersey Education Association's (NJEA) Convention in Atlantic City, N.J.
 

BICs and CALP
(This article is about Basic Interpersonal Communication Skills (BICS) and Cognitive Academic Language Proficiency (CALP))
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Essential Vocabulary 
(This article explains the vocabulary necessary to understand English language learners). 

Four Stages of Second Language Acquisition
(A quick review of the four stages of language acquisition).