These 2-page fact sheets were written by Claudia Peñuela and Karla Shelnutt, and published by the UF Department of Family Youth and Community Sciences, February 2011.
Moderación (FCS8928Span/FY1211)
http://edis.ifas.ufl.edu/fy1211
Proporcionalidad (FCS8929Span/FY1212)
http://edis.ifas.ufl.edu/fy1212
Variedad (FCS8927Span/FY1213)
http://edis.ifas.ufl.edu/fy1213