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Witness the power of exponential growth with an activity that investigates two different savings plans. Class members create tables of values to see how and when a savings plan increasing exponentially exceeds one increasing linearly.
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CCSS:
Designed
Concepts
Additional Tags
Instructional Ideas
- Use as an introductory assignment to exponential functions
- Modify the task to create a homework assignment
Classroom Considerations
- Requires calculators
Pros
- Aligns well to the given Common Core standard F-LE.3
- Real-world scenario allows pupils to practice a life skill
Cons
- Although there are questions for learners to consider, there is not a worksheet
- There is an inconsistency in what variables represent (In the equation y = 1000x, y represents the total amount after x years, while in the equation y = 12.5(2)^x, y represents the amount deposited in year x)