Lesson plan

Use ratio reasoning to solve multi-step ratio problems

teaches Common Core State Standards CCSS.Math.Content.6.RP.A.1 http://corestandards.org/Math/Content/6/RP/A/1
teaches Common Core State Standards CCSS.Math.Content.6.RP.A.3 http://corestandards.org/Math/Content/6/RP/A/3
teaches Common Core State Standards CCSS.Math.Practice.MP1 http://corestandards.org/Math/Practice/MP1
teaches Common Core State Standards CCSS.Math.Practice.MP4 http://corestandards.org/Math/Practice/MP4

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Big Ideas: Ratio reasoning can be used to generate equivalent ratios to solve ratio problems. Solving ratio problems requires attending to the relationships between part:part and part:total quantities. In this lesson, students will apply their understanding of ratios as multiplicative relationships to solve a real-world ratio problem. Students will consider what 1:1 means as a ratio, in the context of implementing a school-wide 1:1 technology program, and will evaluate changes in quantities required to move from one ratio relationship to another. This lesson will build upon students' prior understanding of multiplicative comparisons, fractions, and ratio reasoning, and toward future work in proportionality. Vocabulary: part, total, equivalent ratios, and ratio notation including '3:1'. Special Materials: none