Topic D opens with students estimating the value of expressions involving sums and differences with fractions. “Will your sum be less than or greater than one half? One? How do you know?” Though these conversations have been embedded within almost every Student Debrief up to this point, by setting aside an instructional day to dig deeply into logical arguments, students see that it is very easy to forget to make sense of numbers when calculating. This is really the theme of this topic—reasoning while using fractions.
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From EngageNY.org of the New York State Education Department. Grade 5 Mathematics Module 3, Topic D Overview.
Available from engageny.org/resource/grade-5-mathematics-module-3-topic-d-overview; accessed 2015-05-29.
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