## How to Model?

Tony Hürlimann

info@matmod.ch

November 12, 2023

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Abstract

This paper has three parts. It gives first a short introduction
on the modeling process, explains very briefly its stages in order
to learn how to model. In a second part a number of small
problems with solutions in a third part are exposed by which the
reader can exercise the skills of modeling. To be useful, the reader
should really try hard to solve these problems and look up the
solution only after trying. It is the only way to acquire the skill of
modeling. Three problems are from [4] which is an excellent book
with more than 150 puzzles. Many Internet pages and books are
available with puzzles, one of the oldest is [3]. Martin Gardner
has also published a number of mathematical puzzles in book
form. The focus here is mainly on mathematical models, hence the
third part of the problems have also mathematical formulations
if appropriate. Many modeling examples of puzzles can also be
found in my puzzle and other book: See My Modeling Books.