Solving Percent Problems with a Double Number Line

21st Century Lessons: A Boston Teachers Union Initiative

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About This Lesson

This lesson extends students’ understanding of ratios to include thinking about the relationship of part to whole in a real-life situation and the percent equivalence. Rather than teaching students a quick algorithm for finding the percent of a number, this approach allows students to visualize the percent as representing an equivalent ratio.SWBAT construct and interpret a double number line model for solving percent problems involving finding the whole or a part of the percent. CCSS: 6.RP.3

National standards: 
Common Core State Standards


July 2013
Double number lines are a great visual for kids. So easy to use and understand!