DUARTE, C. D.; http://lattes.cnpq.br/7960222182170278; DUARTE, Cláudio Domingos. (BrasilCentro de Formação de Professores - CFPUFCGUniversidade Federal de Campina Grande, 2005)
The textbook has become, in the present day, an indispensable instrument for the educator, failing to play the mere role of auxiliary in the school environment. And through it, the teacher plans and exercises his activities, ...