O desenvolvimento do raciocínio proporcional: percursos de aprendizagem de alunos do 6º ano de escolaridade. Silvestre AI. AI Silvestre - 2012 - repositorio.ul.pt GSID: yrM30on-hOEJ
An investigation of teachers' intentions and reflections about using Standards-based and traditional textbooks in the classroom. [No authors listed] GSID: UNaCwReTn6cJ
Examining students' algebraic thinking in a curricular context: A longitudinal study. Cai J. J Cai, JC Moyer, N Wang, B Nie - Early algebraization, 2011 - Springer GSID: dHNwDhSZ2pAJ