text_combined: learning language early childhood painter clare university new south wales learning language early childhood published cassell part open linguistics series hb 0 304 70056 8 us 69 95 45 00 language child major tool learning world everyday takenfor granted interactions everyday conversation child learns mother tongue uses resource thinking reasoning book presents rich naturalistic case study one childs use language preschool years twoand ahalf five drawing systemic functional theory argue cognitive development essentially linguistic process offering new description interpretation linguistic cognitive developments period case study examines child changing language terms role interpreting four key domains experience world things world events world semiosis including inner world cognition construal cause effect shows new linguistic possibilities constitute developments cognitive resources prepare child later learning school available review email sales cassellexport demon co uk