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In this section, students extend their earlier understanding of multiplication as equal groups of whole numbers of objects to now include equal groups of fractional pieces.
How many do you see? How do you see them?
Students begin by reasoning about groups containing unit fractions. For instance, they interpret the 5 plates with half an orange each as , which...
In this section, students apply their understanding of fraction equivalence to add tenths and hundredths.
In the previous unit, students learned that . They use this reasoning to add tenths and hundredths by generating equivalent fractions. They also apply what they learned in the previous section to strategically use decomposition and the associative and commutative properties to add three or...
In this section, students learn to add and subtract fractions by decomposing them into sums of smaller fractions, writing equivalent fractions, and using number lines to support their reasoning.
Students begin by thinking about a fraction as a sum of unit fractions with the same denominator, and then as a sum of other smaller fractions. They represent different ways to...