Lesson plan

Name a unit fraction by interpreting a number line model

teaches Common Core State Standards CCSS.Math.Content.3.NF.A.2a http://corestandards.org/Math/Content/3/NF/A/2/a
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4

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Big Ideas: A fraction describes the division of a whole into equal parts. The denominator in a fraction tells how many equal parts the whole or unit is divided into. The numerator tells how many equal parts you are talking about. Fractions can be modeled in multiple ways. This lesson builds on students’ experience partitioning number lines into 2, 3, 4, 6, or 8 equal regions or parts. This task requires students to use fractions that describe a given segment of a number line. Students are asked to describe a model using a fraction and explain how they determined the name of the fraction shown. This builds toward students’ future work with multiple representations of fractions in grades 3-5. Vocabulary: unit fraction, numerator, denominator, number line, segment, partition, whole, equal