SJSD Argument Implementation Plan
Objective: 7.RP.3 – Computing the percentage of a number and solve real-world problems using tax, gratuities, commission, and fees.
Essential Question: How can percent help you understand situations involving money?
Where within the unit will this lesson take place?
End of Chapter 2
Scenario:
A tennis racket at Sport City costs $180 and is discounted 15%. The same model racket costs $200 at Tennis World and is on sale for 20% off.
Sales tax will be 8% at both stores. Find the total cost of each tennis racket. Which store is offering the better deal? Explain. Support your
decision with sound reasoning and representations.
Resources Provided to Students (if applicable):
Resources
Calculator
Product Expected From Students:
Written Document (paragraph)
Lesson Design:
Give copies of examples of similar problems. For example, page 162 example 4, guided practice #1, or shirt problem.
Class discussion on wording of problem: support your decision with sound reasoning and representations.
Students will apply these problems and discussion to the above question.
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Solution
Assessment: Use the SJSD Revised Argument Rubric for All Content Areas
Components
Claim: clearly states an idea or belief that is supported
by evidence
Proficiency Indicators
Establishes a credible claim.
*All types of argument
Reasons: cause, justification, or explanation for how the
evidence supports the claim
Can support claim with clear, valid
reasons.
*All types of argument
Evidence: something that gives a sign or proof of the
existence or truth
Provides relevant and accurate
evidence to back up the reasons.
*All types of argument
Counterclaim: acknowledges other claims
Develops counterclaim fairly
including a refutation.
*Policy Argument, Science FACT, Literary Judgment,
Math FACT (if applicable)
Conclusion: summative statement of the argument that
was made
Provides a concluding statement or
section.
*Policy Argument, Science FACT, Literary Judgment
Content Understanding
Demonstrates accurate content
knowledge.
Sources: publications or other documents or records
that give information
Uses credible sources.
Exceeds
Meets Needs Revision
Not Applicable
Name_________________________
th
7 grade
Argument Writing
7-RP3
A tennis racket at Sport City costs $180 and is discounted 15%. The same model racket costs $200 at Tennis World and is on sale for 20% off.
Sales tax will be 8% at both stores. Find the total cost of each tennis racket. Which store is offering the better deal? Explain. Support your
decision with sound reasoning and representations.