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Lesson Plan

Locate a unit fraction on a number line by composing and decomposing fractions

teaches Common Core State Standards CCSS.Math.Practice.MP1
teaches Common Core State Standards CCSS.Math.Content.3.NF.A.2a
teaches Common Core State Standards CCSS.Math.Practice.MP2
teaches Common Core State Standards CCSS.Math.Practice.MP6
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Big Ideas: Unit fractions can be combined to compose a whole. A whole can be decomposed to locate a unit fraction. This lesson builds on students’ work with partitioning wholes into equal shares and composing a whole with unit fractions using area models and number lines. This task requires students to locate a unit fraction by generating a whole and then decomposing the whole into a different number of equal shares. Students will be applying their knowledge of fractions to compose and decompose a whole. The mathematical concepts in this lesson build toward students’ future work with naming fractions on a number line, comparing fractions, and equivalent fractions. Vocabulary: fraction, unit fraction, whole Special Materials: Number lines to compose and decompose (Supplemental Handout)
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