Renata Cadena, Ephemeral graphic language: from the blackboard to the students’ repertoire, Blucher Education Proceedings, Volume 1, 2015, Pages 246-250, ISSN 2318695X, http://dx.doi.org/10.5151/edupro-aivcipe-47 (www.proceedings.blucher.com.br/article-details/ephemeral-graphic-language-from-the-blackboard-to-the-students-repertoire-18756) Palavras-chave:: ;