FCS8929, a 2-page handout by Claudia Peñuela and Karla P. Shelnutt, explains how proportionality is represented in the MyPyramid symbol and provides guidelines for practicing proportionality to balance one’s diet. Includes a quiz and references. Published by the UF Department of Family, Youth and Community Sciences, October 2010.
http://edis.ifas.ufl.edu/fy1199