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Line 53:
Line 53: − A student understands the basic use of the addition and subtraction of money if the percent of times they over pay initially, followed by correct payment is higher than 70%.+
→How do we know the student understands?
===How do we know the student understands?===
===How do we know the student understands?===
* Since this activity only involves money (not raw numbers), and money independent of any actual real-world currency all results here allow us to conclude that the user understands the mathematical operation within the scope of currentcy