Description
At the beginning of Topic E, students use decomposition and visual models to add and subtract fractions less than 1 to or from whole numbers. They use addition and multiplication to build fractions greater than 1 and represent them on the number line. Students then use these visual models and decompositions to reason about the various forms in which a fraction greater than or equal to 1 may be presented, both as fractions and mixed numbers. They practice converting between these forms and begin understanding the usefulness of each form in different situations. Next, students compare fractions greater than 1, building on their rounding skills and using understanding of benchmarks to reason about which of two fractions is greater (4.NF.2). Students progress to finding and using like denominators or numerators to compare and order mixed numbers. They apply their skills of comparing numbers greater than 1 by solving word problems (4.NF.3d) requiring the interpretation of data presented in line plots (4.MD.4).
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Credits
From EngageNY.org of the New York State Education Department. Grade 4 Mathematics Module 5, Topic E Overview.
Available from engageny.org/resource/grade-4-mathematics-module-5-topic-e-overview; accessed 2015-05-29.
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