Media type: E-Article Title: Multivoicedness and univocality in classroom discourse: an example from theory of matter Contributor: Mortimer, Eduardo Fleury Published: Informa UK Limited, 1998 Published in: International Journal of Science Education, 20 (1998) 1, Seite 67-82 Language: English DOI: 10.1080/0950069980200105 ISSN: 0950-0693; 1464-5289 Keywords: Education Origination: Footnote: