FRANCO, DULCE, e ESMERALDA SANTO. 2016. “THE CHALLENGE OF LEARNING IN THE DIGITAL AGE. AN ANALYSIS OF THE DER (School Textbook, Portuguese Language, 12th Year)”. TICs &Amp; EaD Em Foco 2 (2). São Luís. https://ticsead.uemanet.uema.br/index.php/ticseadfoco/article/view/108.