3.N.13: Demonstrate an understanding of fractions by explaining that a…
Demonstrate an understanding of fractions by explaining that a fraction represents a portion of a whole divided into equal parts, describing situations in which fractions are used, and comparing fractions of the same whole with like denominators.
The Manitoba Mathematics, Kindergarten to Grade 8 outcome 3.N.13 (Number) for Grade 3 says: “Demonstrate an understanding of fractions by explaining that a fraction represents a portion of a whole divided into equal parts, describing situations in which fractions are used, and comparing fractions of the same whole with like denominators.” This Fieldbook unit teaches it hands-on, with everyday materials and a printable teacher guide and student sheet for every lesson. Official wording: Manitoba Mathematics, Kindergarten to Grade 8.
Fair Shares: Fractions and Decimals Grades 3–4
Is half always the same size? Where does three-quarters stand? Why is 3/4 + 2/4 not 5/8? Who jumped further, 1.4 m or 1.35 m? Four hands-on lessons where students fold, stand on a giant number line, measure recipes and measure their own jumps to make sense of fractions and decimals.
- Is half always the same size? 50–60 min
Teams fold and cut paper granola bars into halves, quarters, eighths, thirds and sixths, and discover that a quarter of a long bar is exactly as long as a half of a short one. Students explain that a fraction names equal parts of a whole, and that the same fraction of a different whole can be a different amount.
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