MA.4.FR.2.1: Decompose a fraction, including fractions greater than one, into a…
Decompose a fraction, including fractions greater than one, into a sum of fractions with the same denominator in multiple ways, with objects, drawings and equations.
The Florida's B.E.S.T. Standards for Mathematics outcome MA.4.FR.2.1 (Fractions) for Grade 4 says: “Decompose a fraction, including fractions greater than one, into a sum of fractions with the same denominator in multiple ways, with objects, drawings and equations.” This Fieldbook unit teaches it hands-on, with everyday materials and a printable teacher guide and student sheet for every lesson. Official wording: Florida's B.E.S.T. Standards for Mathematics.
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.
- Which recipe makes more? 50–60 min
Teams measure three trail-mix recipes with fraction cups and dry rice, and find that 3/4 cup plus 2/4 cup overflows the 1-cup mark. Students add and decompose fractions with the same denominator, catch the 'add the bottoms too' mistake with real evidence, and compare totals greater than one.
More Florida Grade 4 math outcomes we teach
Every Florida Grade 4 math standards outcome we teach
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