Robust vs. Soft Constructions (Laborde 2005)

Robust Constructions
  • dragging provides a visual verification of the validity of the construction
Soft Constructions
  • dragging is not verification but part of the construction itself
  • the general can emerge from the specific during thorough searches for the set of loci in which the given conditions are fulfilled 
  • offer a transition from an empirical approach to a theoretical approach 
      Laborde, C. (2005). Robust and softconstructions: two sides of the use of dynamic geometry environments. In S.C. Chu, W.C. Yang and H.C. Lew (Eds). Proceedings of the Tenth Asian Technology Conference in Mathematics, Cheong-Ju, South Korea: Asian Technology Conference in Mathematics.