Exponential relationship
GRASPS: Outlining the Performance Task
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GRASPS
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Use of GRASPS in the Unit
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Goal
1. Provide a statement of the task
2. Establish a goal, problem, challenge, or obstacle in the task
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Your assignment is to compare and then determine which investment at two banks will earn you more interest.
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Role
1. Define the role of the student in the task
2. State the job of the students in the task.
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The student will determine the best interest rate over a period of time.
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Audience
1. Identify the target audience within the context of the scenario
2. Example audiences might include a specific person, or group
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The audience is the class and the teacher.
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Situation
1. Set the context of the scenario
2. Explain the situation
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Each student gives feedback on the best outcome.
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Product
1. Clarify what the students will create
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A written response including evidence of which investment will earn more interest.
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Standards and Criteria
1. Provide students with a clear picture of success
2. Identify specific curriculum standards and indicators
3. Issue rubrics to the students
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See rubrics.
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Investing Prize money:
You want to invest $15 820 that you just received as a prize from a contest that you entered. You research certificates of deposit (CDs) at two different banks. The details for your best options are in the table below. Both CDs earn compound interest, which you will work with in Chapter 7 Section 7. When interest is compounded, it is added to the account's principal to become part of the money that earns interest.
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Bank
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CD Length
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Annual interest rate
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Frequency of compounding
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West Bank
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6 years
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3.8%
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Quarterly
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First Bank
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5 years
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4.3%
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Monthly
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Task description:
Determine which investment will earn you more interest. How much more interest will you earn with that investment?
As you complete the task, you'll apply several Standards for Mathematical
Practice:
- You will find the value of a compound interest account after one year
- You will write algebraic expressions that will help you understand a formula for the value of a compound interest account
- You will use a formula to model your investment choices