Family Plan
How much should you pay for a shared wireless plan?
Students will
- Use proportional reasoning to predict 30 days of cell phone usage based on 1, 7, and 15 days
- Calculate the monthly bill for two siblings on a family plan, including flat-rate items and overages
- Based on his/her usage, determine how much each sibling should pay
- Evaluate alternative wireless plans, and decide whether up- or downgrading would better fit their wireless behavior and save them money in the future
Before you begin
Students should be able to perform operations on decimals and apply the order of operations. The lesson applies unit rates and involves proportional reasoning, but extensive prior experience with these is not assumed. The focus in this lesson is more on constructing and communicating logical arguments than it is on sophisticated mathematics.Common Core Standards
Content Standards
Mathematical Practices
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