Design tasks and competitions in the field of parametric architecture. Parametric design is a design method which uses computers and algorithms to create three dimensional models. The advantage of parametric design is that it is very useful for optimization and form finding, because it is possible to get different versions of a model with changing the input parameters of the algorithm. It is possible to handle a lot of different spatial elements together, and with its mathematical and geometrical commands it is possible to create shapes and forms which would be very hard to handle with traditional architectural tools.