Lesson plan

Name a unit fraction by representing it on a number line

teaches Common Core State Standards CCSS.Math.Content.3.NF.A.1 http://corestandards.org/Math/Content/3/NF/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4
teaches Common Core State Standards CCSS.Math.Practice.MP6 http://corestandards.org/Math/Practice/MP6

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Big Ideas: A fraction describes the division of a whole (region, set, segment) into equal parts. The denominator in a fraction tells how many equal parts the whole or unit is divided into. The numerator indicates how many equal parts are taken. Fractions can be modeled in multiple ways including using a number line. This lesson builds on students' experiences naming unit fractions with denominators of 2, 3, 4, 6, and 8. The task focuses on students' understanding of the number line. Students are asked to name fractions that have been modeled on number lines. This lesson solidifies students' understanding of how unit fractions can be represented by number line models (not just area models, as have been used in previous lessons) so that students are ready, in future lessons, to draw their own representations of unit fractions on the number line. Vocabulary: unit fraction, partition, number line, numerator, denominator Special Materials: none