• As razões trigonométricas no triângulo retângulo e as rampas de acesso 

      Arantes, Priscila Paschoali Crivelenti Vilela; http://lattes.cnpq.br/4801700882792848 (Universidade Federal de São CarlosBRUFSCarPrograma de Pós-graduação em Matemática (PROFMAT), 2013-03-23)
      This work is a math lesson on the triangle trigonometric ratios, using analysis of access ramps for people with special needs mobility. The mathematical content designed to be taught in grade 8/9 years of elementary school, ...