Lesson plan

# 3. Using percent to compare (A)

teaches Common Core State Standards CCSS.Math.Content.7.EE.B.3 http://corestandards.org/Math/Content/7/EE/B/3
teaches Common Core State Standards CCSS.Math.Content.7.RP.A.3 http://corestandards.org/Math/Content/7/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.MP2 http://corestandards.org/Math/Practice/MP2

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Lesson objective: Use percents to compare relationships based on different totals in a real-world context.

This lesson provides an opportunity for students to apply their knowledge and understanding of percents to a real-life situation. Students are asked to calculate and compare individualized percent daily values based on the consumption of certain portions of milk.

Key Concept students will use:

• Percent is a way to compare relationships that are not based on the same whole by standardizing each comparison to 100.

Skills students will use:

• Proportional reasoning (Grade 7, Unit 2)
• Using double number lines to find percent values

Students engage in Mathematical Practice 2 (Reason abstractly and quantitatively) as they make sense of the quantities and their relationships that are involved in completing this task.

Key vocabulary:

• double number line
• percent
• ratio