Add another strategy to the toolboxes of young mathematicians with this elementary math lesson plan on using number lines to add and subtract fractions.

Concepts

adding fractions, number lines, mixed numbers, rational numbers, modeling fractions, parts and wholes, fractions

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Additional Tags

math

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Instructional Ideas

• Insert this lesson into an upper-elementary math unit on rational numbers
• Laminate copies of the number line templates, allowing students to use with dry erase markers to help them find sums and differences of fractions
• Use the included worksheets as in-class or homework assignments, or even as exit card assessments

Pros

• Lesson includes all supporting worksheets and printable materials
• Provides a warm-up problem that activates prior knowledge about fractions
• Comments are included throughout the lesson plan as support for teachers
• Practice exercises ask students to provide written explanations of their solutions

Cons

• Answer keys are not included, by can be created by working through the problems ahead of time

Common Core

3.NF.A.2.a 3.NF.A.2.b 4.NF.B.3.a 4.NF.B.3.c 5.NF.A.1 5.NF.A.2 MP5 MP7