Description
In Topic C, students relate geometric figures to equal parts and name the parts as halves and fourths (or quarters) (1.G.3). For example, students now see that a rectangle can be partitioned into two equal triangles (whole to part) and that the same triangles can be recomposed to form the original rectangle (part to whole). Students see that as they create more parts, decomposing the shares from halves to fourths, the parts get smaller.
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Credits
From EngageNY.org of the New York State Education Department. Grade 1 Mathematics Module 5, Topic C.
Available from engageny.org/resource/grade-1-mathematics-module-5-topic-c; accessed 2015-05-29.
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