Series Common Core Challenge: Proportional Relationships
Math.7.RP.A.2
Common core State Standards
- Math: Math
- 7: Grade 7
- RP: Ratios & Proportional Relationships
- A: Analyze proportional relationships and use them to solve real-world and mathematical problems
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2:
Recognize and represent proportional relationships between quantities.
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a. Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.
b. Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and verbal descriptions of proportional relationships.
c. Represent proportional relationships by equations. For example, if total cost t is proportional to the number n of items purchased at a constant price p, the relationship between the total cost and the number of items can be expressed as t = pn.
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d. Explain what a point (x, y) on the graph of a proportional relationship means in terms of the situation, with special attention to the points (0, 0) and (1, r) where r is the unit rate.
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Discussion and Supporting Materials
Thought starters
- What Core Action indicators does this lesson best exemplify?
- How does this lesson develop students’ conceptual understanding of proportional relationships?
School Details
KIPP S.T.A.R. Charter School433 West 123rd Street
New York NY 10027
Population: 1001
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Joseph Almeida
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E W Jan 5, 2015 12:25pm
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Michelle Townsley Nov 4, 2013 7:11pm