To get you started in the algebra play area Robbins conjecture. Once upon a time, there was a poor woodcutter who lived with his family in the middle of a wood. The trees that he wanted cut down. The mark used by the forester was a circle, made with red paint, daubed on the bark of the doomed tree. Very occasionally, the forester changed his mind about a tree that already had two.

Blog para Prácticum de narrativa digital. 28 de junio de 2010. La propuesta de Silva atiende a la necesidad de cambio educativo, para además aprovechar y fomentar los aspectos beneficiosos de los nuevos medios, ya que la aportación de la interactividad es un plus comunicacional en dos aspectos, en la relación persona-máquina. En el sentido de autor.