%0 Journal Article %T Unraveling the Mystery of the Origin of Mathematical Problems: Using a Problem-Posing Framework With Prospective Mathematics Teachers %A Jose Contreras %J Mathematics Educator %D 2007 %I University of Georgia %X In this article, I model how a problem-posing framework can be used to enhance our abilities to systematically generate mathematical problems by modifying the attributes of a given problem. The problem-posing model calls for the application of the following fundamental mathematical processes: proving, reversing, specializing, generalizing, and extending. The given problem turned out to be a rich source of interesting, worthwhile mathematical problems appropriate for secondary mathematics teachers and high school students. %U http://math.coe.uga.edu/TME/Issues/v17n2/v17n2_Contreras.pdf