Before 3D modeling process can get started, the modeler needs to create a series of concept sketches for the project. To do this, the modeler needs to consult with his customer or
http://www.ehow.com/about_5457580_definitionmodel...

This presentation might answer your question: http://slidesha.re/simrev. EN.
http://www.quora.com/Simulation/Whatisthedefini...

a model for multiplication problems, in which the length and width of a rectangle. represents the product.
http://wiki.answers.com/Q/What_is_an_Area_Model

the Area Model for Polynomial is a model for multiplication problems, in which the length and width of a rectangle represents the product. so if length = (2x+3) and width = (4x+5)
http://answers.yahoo.com/question/index?qid=201008...
