adulteducation alphabet bilingual bilingualeducation bilingualism casestudies childrenofimmigrants education education(elementary) englishlanguage familyliteracyprograms foreignspeakers hispanicamericanchildren hispanicamericans language languagearts languages languagesincontact mathematics orthographyandspelling parentparticipation reading self-instruction studyandteaching studyandteaching(elementary) unitedstates wordrecognition