Description
Topic H comprises an exploration lesson where students find the sum of all like denominators from 0/n to n/n. Students first work in teams with fourths, sixths, eighths, and tenths. For example, they might find the sum of all sixths from 0/6 to 6/6. Students discover that they can make pairs with a sum of 1 to add more efficiently, and there is one fraction, 3/6, without a pair. They then extend this to similarly find sums of thirds, fifths, sevenths, and ninths, observing patterns when finding the sum of odd and even denominators (4.OA.5).
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Credits
From EngageNY.org of the New York State Education Department. Grade 4 Mathematics Module 5, Topic H Overview.
Available from engageny.org/resource/grade-4-mathematics-module-5-topic-h-overview; accessed 2015-05-29.
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