Star, JonKenyon, MartinaJoiner, RebeccaRittle-Johnson, Bethany2011-05-152010Star, Jon R., Martina Kenyon, Rebecca Joiner, and Bethany Rittle-Johnson. 2010. Comparison helps students learn to be better estimators. Teaching Children Mathematics, 16, no. 9: 557-563.1073-5836http://nrs.harvard.edu/urn-3:HUL.InstRepos:4889491This article describes a recent research study that examined the effectiveness of comparison on students’ learning of strategies and concepts for computational estimation.en-USJournal Article2011-05-15