CALCULATOR CHAOS!
Process
Introduction
Process
With your math partner, use the internet resources provided in the process and your own hypotheses to determine why both calculators are correct.  You and your partner will write your own persuasive letter to one another on how both calculators get the answer of 13 and 25 using the problem: 

4 + 3 x 4 - 3
Task
Evaluation
Conclusion
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